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Flights from Hartford to Seattle

Search cheap flights from Hartford to Seattle in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$180, and round-trip tickets start at US$384.

      • BDL 17:16
        9h 41m
        1 stop
        SEA 23:57
        Hartford - Seattle | Fri, Aug 21 | Delta Air Lines
        SEA 23:10
        9h 50m
        1 stop
        BDL 12:00
        Seattle - Hartford | Mon, Aug 24 | Delta Air Lines
        US$384 US$773
        50% off
        50% off
        US$773 US$384
      • BDL 06:01
        9h 6m
        1 stop
        SEA 12:07
        Hartford - Seattle | Tue, Aug 4 | American Airlines
        SEA 23:16
        9h 30m
        1 stop
        BDL 11:46
        Seattle - Hartford | Tue, Aug 11 | American Airlines
        US$462 US$773
        40% off
        40% off
        US$773 US$462
      • BDL 17:16
        9h 41m
        1 stop
        SEA 23:57
        Hartford - Seattle | Mon, Aug 24 | Delta Air Lines
        SEA 23:59
        8h 42m
        1 stop
        BDL 11:41
        Seattle - Hartford | Fri, Aug 28 | Delta Air Lines
        US$477 US$773
        38% off
        38% off
        US$773 US$477
      • BDL 14:39
        11h 17m
        1 stop
        SEA 22:56
        Hartford - Seattle | Fri, Aug 21 | American Airlines
        SEA 22:00
        9h 20m
        1 stop
        BDL 10:20
        Seattle - Hartford | Mon, Aug 24 | American Airlines
        US$480
        38% off
        US$773 US$480
      • BDL 11:38
        10h 29m
        1 stop
        SEA 19:07
        Hartford - Seattle | Fri, Aug 21 | United Airlines
        SEA 23:00
        8h 38m
        1 stop
        BDL 10:38
        Seattle - Hartford | Mon, Aug 24 | United Airlines
        US$484
        37% off
        US$773 US$484
      • BDL 15:36
        10h 28m
        1 stop
        SEA 23:04
        Hartford - Seattle | Fri, Aug 14 | United Airlines
        SEA 06:00
        9h 5m
        1 stop
        BDL 18:05
        Seattle - Hartford | Sun, Aug 16 | Delta Air Lines
        US$521
        33% off
        US$773 US$521
      • BDL 16:50
        8h 53m
        1 stop
        SEA 22:43
        Hartford - Seattle | Mon, Aug 24 | United Airlines
        SEA 23:59
        8h 42m
        1 stop
        BDL 11:41
        Seattle - Hartford | Fri, Aug 28 | Delta Air Lines
        US$528
        32% off
        US$773 US$528
      • BDL 14:39
        9h 19m
        1 stop
        SEA 20:58
        Hartford - Seattle | Mon, Aug 24 | American Airlines
        SEA 21:58
        9h 24m
        1 stop
        BDL 10:22
        Seattle - Hartford | Fri, Aug 28 | American Airlines
        US$564
        27% off
        US$773 US$564
      • HFD 13:00
        17h 25m
        1 stop
        SEA 14:00
        Hartford - Seattle | Wed, Jul 15 | Normal Airline
        SEA 15:00
        6h
        Nonstop
        HFD 16:00
        Seattle - Hartford | Fri, Jul 17 | Normal Airline
        Find more flights
        Find more flights
      • BDL 17:06
        7h 59m
        1 stop
        SEA 22:05
        Hartford - Seattle | Sun, Aug 30 | Delta Air Lines
        US$180 US$321
        44% off
        44% off
        US$321 US$180
      • BDL 13:54
        9h 29m
        1 stop
        SEA 20:23
        Hartford - Seattle | Thu, Sep 3 | Delta Air Lines
        US$185 US$321
        42% off
        42% off
        US$321 US$185
      • BDL 15:36
        8h 39m
        1 stop
        SEA 21:15
        Hartford - Seattle | Thu, Aug 27 | United Airlines
        US$193 US$321
        40% off
        40% off
        US$321 US$193
      • BDL 17:24
        9h 33m
        1 stop
        SEA 23:57
        Hartford - Seattle | Wed, Aug 26 | Delta Air Lines
        US$214
        33% off
        US$321 US$214
      • BDL 18:55
        8h 3m
        1 stop
        SEA 23:58
        Hartford - Seattle | Thu, Jul 30 | Delta Air Lines
        US$215
        33% off
        US$321 US$215
      • BDL 19:05
        7h 49m
        1 stop
        SEA 23:54
        Hartford - Seattle | Sat, Aug 22 | Delta Air Lines
        US$230
        28% off
        US$321 US$230
      • BDL 16:50
        8h 53m
        1 stop
        SEA 22:43
        Hartford - Seattle | Wed, Aug 26 | United Airlines
        US$231
        28% off
        US$321 US$231
      • BDL 18:05
        19h 30m
        1 stop
        SEA 10:35
        Hartford - Seattle | Wed, Aug 26 | Breeze Airways
        US$232
        28% off
        US$321 US$232
      • BDL 16:50
        8h 53m
        1 stop
        SEA 22:43
        Hartford - Seattle | Sun, Aug 23 | United Airlines
        US$234
        27% off
        US$321 US$234
      • HFD 13:00
        17h 25m
        1 stop
        SEA 14:00
        Hartford - Seattle | Wed, Jul 15 | Normal Airline
        Find more flights
        Find more flights

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

Cheapest airlines flights from Hartford to Seattle

You can choose from 1 airlines that fly from Hartford to Seattle, including Sun Country Airlines, Delta Air Lines has lowest fares on this route.
Sun Country Airlines logo Sun Country Airlines
Airlines are determined based on actual purchased flight tickets from Hartford to Seattle according to previous 12 months data from Trip.com.

Hartford to Seattle Flight Details

The distance between Hartford and Seattle is about 3,910.22 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is October.

Cheapest one-way flight priceUS$180
Cheapest return ticket priceUS$384
Cheapest monthOctober
Peak season for travelJuly
Flight distance3,910.22 km
Popular airlineSun Country Airlines
Flight statistics for the Hartford–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Hartford to Seattle (HFD-SEA)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$180 on Cheapest nonstop routes (e.g. BDL to SEA on Sun, Aug 30), while Delta Air Lines offers Cheapest nonstop round-trips from US$384 departing on Fri, Aug 21 and returning on Mon, Aug 24.
  • At the moment, several airlines serve connecting flights from Hartford to Seattle, including: Sun Country Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Hartford to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Hartford to Seattle, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Aug 30, with one-way flights priced at just US$180.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Hartford to Seattle is October, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Hartford to Seattle on July 15, 2026 with Delta Air Lines, with prices starting at US$278.
  • You can land at any one of the following hubs in Seattle, with Bradley International Airport to Seattle-Tacoma International Airport (BDL-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE) Seattle-Tacoma International Airport (SEA).
  • The time difference between Seattle and Hartford is 3h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from Hartford to Seattle

Which airline offers the cheapest direct flights from Hartford to Seattle?

Data is based on the average price of all nonstop flights from Hartford to Seattle on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, United Airlines provides the lowest-priced direct flights from Hartford to Seattle, with fares starting at US$285.

US$160
US$285
US$411
US$537
US$662
United Airlines
US$285
United Airlines
Delta Air Lines
US$452
Delta Air Lines
American Airlines
US$662
American Airlines

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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.