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Dulles International Airport to Buffalo Niagara International Airport flight
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Dulles International Airport to Buffalo Niagara International Airport Flights Info

Cheapest one-way
€90
Frontier Airlines Frontier Airlines 5h 27m · 1 stop Fri, Nov 20
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Cheapest round-trip
€132
Delta Air Lines Delta Air Lines 5h 27m · 2 stops Sun, Jan 3 - Sun, Jan 10
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Recommended airlines
Frontier Airlines Frontier AirlinesCheapest· From €90 American Airlines American AirlinesMost booked

Explore the cheapest one-way and round-trip flights from Dulles International Airport to Buffalo Niagara International Airport over the next 90 days, with one-way fares from €90 and round-trip from €132. Based on Trip.com's latest 7-day flight data.

    • Cheapest
      IAD 07:48
      5h 27m
      1 stop
      BUF 13:15
      Washington D.C. - Buffalo | Fri, Nov 20 | Frontier Airlines
      €90 €259
      65% off
      65% off
      €259 €90
    • IAD 22:33
      13h 47m
      1 stop
      BUF 12:20
      Washington D.C. - Buffalo | Sat, Dec 12 | Frontier Airlines
      €92 €259
      64% off
      64% off
      €259 €92
    • IAD 22:25
      19h
      1 stop
      BUF 17:25
      Washington D.C. - Buffalo | Mon, Dec 21 | Frontier Airlines
      €110 €259
      57% off
      57% off
      €259 €110
    • IAD 06:50
      6h 9m
      1 stop
      BUF 12:59
      Washington D.C. - Buffalo | Wed, Dec 2 | Frontier Airlines
      €115
      56% off
      €259 €115
    • IAD 13:55
      23h 13m
      1 stop
      BUF 13:08
      Washington D.C. - Buffalo | Thu, Dec 31 | Frontier Airlines
      €116
      55% off
      €259 €116
    • IAD 21:35
      22h 49m
      1 stop
      BUF 20:24
      Washington D.C. - Buffalo | Tue, Nov 24 | Frontier Airlines
      €116
      55% off
      €259 €116
    • IAD 13:55
      23h 13m
      1 stop
      BUF 13:08
      Washington D.C. - Buffalo | Thu, Dec 24 | Frontier Airlines
      €118
      54% off
      €259 €118
    • IAD 07:32
      6h 17m
      1 stop
      BUF 13:49
      Washington D.C. - Buffalo | Sat, Nov 21 | Frontier Airlines
      €119
      54% off
      €259 €119
    • IAD 21:35
      22h 49m
      1 stop
      BUF 20:24
      Washington D.C. - Buffalo | Thu, Nov 26 | Frontier Airlines
      €120
      54% off
      €259 €120
    • WAS 13:00
      17h 25m
      1 stop
      BUF 14:00
      Washington D.C. - Buffalo | Sun, Nov 15 | Normal Airline
      More cheap flights
      More cheap flights
    • Cheapest nonstop
      IAD 17:50
      1h 29m
      Nonstop
      BUF 19:19
      Washington D.C. - Buffalo | Fri, Dec 11 | United Airlines
      BUF 10:00
      1h 28m
      Nonstop
      IAD 11:28
      Buffalo - Washington D.C. | Fri, Dec 18 | United Airlines
      €212 €270
      21% off
      21% off
      €270 €212
    • IAD 17:49
      1h 33m
      Nonstop
      BUF 19:22
      Washington D.C. - Buffalo | Fri, Jan 8 | United Airlines
      BUF 09:55
      1h 38m
      Nonstop
      IAD 11:33
      Buffalo - Washington D.C. | Mon, Jan 11 | United Airlines
      €218 €270
      19% off
      19% off
      €270 €218
    • IAD 06:00
      5h 27m
      1 stop
      BUF 11:27
      Washington D.C. - Buffalo | Sun, Jan 3 | Delta Air Lines
      BUF 06:15
      5h 44m
      1 stop
      IAD 11:59
      Buffalo - Washington D.C. | Sun, Jan 10 | Delta Air Lines
      €132 €270
      51% off
      51% off
      €270 €132
    • IAD 06:00
      5h 24m
      1 stop
      BUF 11:24
      Washington D.C. - Buffalo | Sat, Dec 5 | Delta Air Lines
      BUF 06:10
      4h 32m
      1 stop
      IAD 10:42
      Buffalo - Washington D.C. | Wed, Dec 9 | Delta Air Lines
      €134
      50% off
      €270 €134
    • IAD 16:50
      6h 20m
      1 stop
      BUF 23:10
      Washington D.C. - Buffalo | Thu, Dec 24 | Delta Air Lines
      BUF 15:20
      6h 32m
      1 stop
      DCA 21:52
      Buffalo - Washington D.C. | Thu, Dec 31 | Delta Air Lines
      €168
      38% off
      €270 €168
    • IAD 17:10
      5h 38m
      1 stop
      BUF 22:48
      Washington D.C. - Buffalo | Mon, Dec 7 | Delta Air Lines
      BUF 19:40
      3h 43m
      1 stop
      IAD 23:23
      Buffalo - Washington D.C. | Thu, Dec 10 | Delta Air Lines
      €168
      38% off
      €270 €168
    • IAD 06:00
      5h 24m
      1 stop
      BUF 11:24
      Washington D.C. - Buffalo | Sun, Dec 6 | Delta Air Lines
      BUF 12:06
      6h 33m
      1 stop
      DCA 18:39
      Buffalo - Washington D.C. | Thu, Dec 10 | Delta Air Lines
      €168
      38% off
      €270 €168
    • IAD 06:00
      5h 24m
      1 stop
      BUF 11:24
      Washington D.C. - Buffalo | Sun, Dec 13 | Delta Air Lines
      BUF 19:40
      3h 54m
      1 stop
      DCA 23:34
      Buffalo - Washington D.C. | Wed, Dec 16 | Delta Air Lines
      €168
      38% off
      €270 €168
    • IAD 07:40
      5h 23m
      1 stop
      BUF 13:03
      Washington D.C. - Buffalo | Sun, Nov 15 | Frontier Airlines
      BUF 21:20
      23h 20m
      1 stop
      IAD 20:40
      Buffalo - Washington D.C. | Sun, Nov 22 | Frontier Airlines
      €188
      30% off
      €270 €188
    • WAS 13:00
      17h 25m
      1 stop
      BUF 14:00
      Washington D.C. - Buffalo | Sun, Nov 15 | Normal Airline
      BUF 15:00
      6h
      Nonstop
      WAS 16:00
      Buffalo - Washington D.C. | Tue, Nov 17 | Normal Airline
      More cheap flights
      More cheap flights
    • Cheapest nonstop
      IAD 12:46
      1h 29m
      Nonstop
      BUF 14:15
      Washington D.C. - Buffalo | Mon, Dec 21 | United Airlines
      €196 €259
      24% off
      24% off
      €259 €196
    • IAD 17:35
      1h 30m
      Nonstop
      BUF 19:05
      Washington D.C. - Buffalo | Mon, Nov 30 | United Airlines
      €209 €259
      19% off
      19% off
      €259 €209
    • IAD 17:50
      1h 29m
      Nonstop
      BUF 19:19
      Washington D.C. - Buffalo | Tue, Dec 8 | United Airlines
      €260 €321
      19% off
      19% off
      €321 €260
    • IAD 08:32
      1h 22m
      Nonstop
      BUF 09:54
      Washington D.C. - Buffalo | Mon, Nov 30 | United Airlines
      €266
      19% off
      €329 €266
    • WAS 13:00
      17h 25m
      1 stop
      BUF 14:00
      Washington D.C. - Buffalo | Sun, Nov 15 | Normal Airline
      More cheap flights
      More cheap flights
    • Cheapest nonstop
      IAD 17:50
      1h 29m
      Nonstop
      BUF 19:19
      Washington D.C. - Buffalo | Tue, Dec 8 | United Airlines
      €260 €321
      19% off
      19% off
      €321 €260
    • IAD 11:30
      3h 49m
      1 stop
      BUF 15:19
      Washington D.C. - Buffalo | Wed, Dec 9 | Delta Air Lines
      €242 €321
      25% off
      25% off
      €321 €242
    • IAD 06:00
      4h 13m
      1 stop
      BUF 10:13
      Washington D.C. - Buffalo | Sat, Dec 12 | Delta Air Lines
      €242 €321
      25% off
      25% off
      €321 €242
    • IAD 11:30
      3h 49m
      1 stop
      BUF 15:19
      Washington D.C. - Buffalo | Thu, Dec 10 | Delta Air Lines
      €242
      25% off
      €321 €242
    • IAD 11:30
      3h 49m
      1 stop
      BUF 15:19
      Washington D.C. - Buffalo | Mon, Dec 7 | Delta Air Lines
      €246
      23% off
      €321 €246
    • IAD 11:30
      3h 49m
      1 stop
      BUF 15:19
      Washington D.C. - Buffalo | Tue, Dec 8 | Delta Air Lines
      €250
      22% off
      €321 €250
    • IAD 11:30
      3h 49m
      1 stop
      BUF 15:19
      Washington D.C. - Buffalo | Thu, Dec 3 | Delta Air Lines
      €259
      19% off
      €321 €259
    • WAS 13:00
      17h 25m
      1 stop
      BUF 14:00
      Washington D.C. - Buffalo | Sun, Nov 15 | Normal Airline
      More cheap flights
      More cheap flights
    • IAD 08:32
      1h 22m
      Nonstop
      BUF 09:54
      Washington D.C. - Buffalo | Mon, Nov 30 | United Airlines
      €266 €329
      19% off
      19% off
      €329 €266
    • IAD 12:46
      1h 29m
      Nonstop
      BUF 14:15
      Washington D.C. - Buffalo | Mon, Dec 21 | United Airlines
      €196 €259
      24% off
      24% off
      €259 €196
    • IAD 17:50
      1h 29m
      Nonstop
      BUF 19:19
      Washington D.C. - Buffalo | Tue, Dec 8 | United Airlines
      €260 €321
      19% off
      19% off
      €321 €260
    • IAD 17:35
      1h 30m
      Nonstop
      BUF 19:05
      Washington D.C. - Buffalo | Mon, Nov 30 | United Airlines
      €209
      19% off
      €259 €209
    • IAD 07:48
      5h 27m
      1 stop
      BUF 13:15
      Washington D.C. - Buffalo | Fri, Nov 20 | Frontier Airlines
      €90
      65% off
      €259 €90
    • IAD 07:32
      5h 31m
      1 stop
      BUF 13:03
      Washington D.C. - Buffalo | Sun, Nov 15 | Frontier Airlines
      €129
      50% off
      €259 €129
    • IAD 06:50
      6h 9m
      1 stop
      BUF 12:59
      Washington D.C. - Buffalo | Wed, Dec 2 | Frontier Airlines
      €115
      56% off
      €259 €115
    • IAD 06:50
      6h 9m
      1 stop
      BUF 12:59
      Washington D.C. - Buffalo | Sun, Nov 22 | Frontier Airlines
      €130
      50% off
      €259 €130
    • IAD 07:32
      6h 17m
      1 stop
      BUF 13:49
      Washington D.C. - Buffalo | Sat, Nov 21 | Frontier Airlines
      €119
      54% off
      €259 €119
    • WAS 13:00
      17h 25m
      1 stop
      BUF 14:00
      Washington D.C. - Buffalo | Sun, Nov 15 | Normal Airline
      More cheap flights
      More cheap flights

Displayed flight fares from Washington D.C. to Buffalo are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Dulles International Airport to Buffalo Niagara International Airport?

The cheapest airline flying from Dulles International Airport to Buffalo Niagara International Airport is Frontier Airlines (from €90) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.
American Airlines logo American Airlines

What is the flight schedule from Dulles International Airport to Buffalo Niagara International Airport?

Check on the flight schedule from Washington D.C. to Buffalo to find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA4335

    Dulles International Airport

    12:35

    IAD

    1h 11m

    13:46

    BUF

    S - T W T F -
    Search

  2. UA4823

    Dulles International Airport

    17:40

    IAD

    1h 29m

    19:09

    BUF

    S - - W T - S
    Search

  3. F94707

    Dulles International Airport

    07:32

    IAD

    2h 22m

    Nonstop

    09:54

    ATL

    S M T W - F S
    Search

  4. F91408

    Hartsfield–Jackson Atlanta International Airport

    16:03

    ATL

    2h 9m

    Nonstop

    18:12

    BUF

    S - T W T - -

  5. AA5447

    Dulles International Airport

    18:01

    IAD

    1h 38m

    Nonstop

    19:39

    CLT

    S M T W T - S
    Search

  6. AA2429

    Charlotte Douglas International Airport

    20:50

    CLT

    1h 47m

    Nonstop

    22:37

    BUF

    S M T W T F S

  7. F91081

    Dulles International Airport

    18:07

    IAD

    2h 20m

    Nonstop

    20:27

    ATL

    - M - - T - -
    Search

  8. F91408

    Hartsfield–Jackson Atlanta International Airport

    16:03

    ATL

    2h 9m

    Nonstop

    18:12

    BUF

    S - T W T - -

  9. DL1354

    Dulles International Airport

    07:00

    IAD

    2h

    Nonstop

    09:00

    ATL

    S M T W T F S
    Search

  10. DL2050

    Hartsfield–Jackson Atlanta International Airport

    16:37

    ATL

    2h 1m

    Nonstop

    18:38

    BUF

    S M T W T - S

  11. F91081

    Dulles International Airport

    18:07

    IAD

    2h 20m

    Nonstop

    20:27

    ATL

    - M - - T - -
    Search

  12. DL2334

    Hartsfield–Jackson Atlanta International Airport

    21:54

    ATL

    2h 1m

    Nonstop

    23:55

    BUF

    S M T W T F S

  13. F93691

    Dulles International Airport

    22:57

    IAD

    2h 4m

    Nonstop

    01:01

    ATL

    - - - - T - -
    Search

  14. DL1384

    Hartsfield–Jackson Atlanta International Airport

    09:06

    ATL

    2h

    Nonstop

    11:06

    BUF

    S M T W T F S

  15. F93691

    Dulles International Airport

    22:57

    IAD

    2h 4m

    Nonstop

    01:01

    ATL

    - - - - T - -
    Search

  16. F91408

    Hartsfield–Jackson Atlanta International Airport

    16:03

    ATL

    2h 9m

    Nonstop

    18:12

    BUF

    S - T W T - -

  17. DL1354

    Dulles International Airport

    07:00

    IAD

    2h

    Nonstop

    09:00

    ATL

    S M T W T F S
    Search

  18. DL2334

    Hartsfield–Jackson Atlanta International Airport

    21:54

    ATL

    2h 1m

    Nonstop

    23:55

    BUF

    S M T W T F S
Find more flights and airlines

FAQs for Dulles International Airport to Buffalo Niagara International Airport Flights

  • How long is the flight from Dulles International Airport to Buffalo Niagara International Airport?

    Dulles International Airport to Buffalo Niagara International Airport takes about 53 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 3 daily flights from Dulles International Airport (IAD) to Buffalo Niagara International Airport (BUF).
  • The earliest flight from Dulles International Airport to Buffalo Niagara International Airport departs at 08:32, and the last departs at 22:19, with about 9 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Dulles International Airport (IAD) to Buffalo Niagara International Airport (BUF) is quite popular. Without considering departure times or holidays, tickets cost around €332 in November, the most expensive month to book this route.
  • The earliest flight departs from Dulles International Airport at 08:20 and arrives in Buffalo Niagara International Airport at 09:43.
  • The latest flight departs from Dulles International Airport at 17:35 and arrives in Buffalo Niagara International Airport at 19:04.
  • United Airlines is a very popular airline operating an average of 817 flights per month.
  • One-way flights from Dulles International Airport to Buffalo Niagara International Airport currently start from €90, and round-trip fares start from €132. The current lowest fare is a Frontier Airlines flight departing on Fri, Nov 20; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from Dulles International Airport to Buffalo Niagara International Airport, with an average flight time of 49 minutes, and around 24 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Dulles International Airport to Buffalo Niagara International Airport is €290. Prices may vary depending on the departure date, airline, and availability.
  • Dulles International Airport to Buffalo Niagara International Airport operates around 24 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Dulles International Airport and Buffalo Niagara International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.