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Flights from Twin Falls to Seattle

Hi, I've summed up all the key info for Twin Falls to Seattle flights

Cheapest one-way

US$ 195
Delta Air Lines Wed, Oct 21

20% below next 30d avg. (US$243)

Cheapest round-trip

US$ 304
Delta Air Lines Sat, Oct 3

When to fly

November Cheapest month
August Peak month

With a lowest one-way fare of US$195 , travelers can expect an average price of US$243 for upcoming trips, while round-trip tickets start at US$304 . To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 2d ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

Explore the cheapest one-way and round-trip flights from Twin Falls to Seattle over the next 90 days, with one-way fares from US$195 and round-trip from US$304. Based on Trip.com's latest 7-day flight data.

      • TWF 06:16
        3h 43m
        1 stop
        SEA 08:59
        Twin Falls - Seattle | Sat, Oct 3 | Delta Air Lines
        SEA 05:30
        5h 55m
        1 stop
        TWF 12:25
        Seattle - Twin Falls | Sat, Oct 10 | Delta Air Lines
        US$304 US$1,078
        72% off
        72% off
        US$1,078 US$304
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Tue, Sep 22 | Delta Air Lines
        SEA 05:45
        5h 38m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Mon, Sep 28 | Delta Air Lines
        US$316 US$1,078
        71% off
        71% off
        US$1,078 US$316
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Wed, Sep 16 | Delta Air Lines
        SEA 05:45
        5h 38m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Tue, Sep 22 | Delta Air Lines
        US$364 US$1,078
        66% off
        66% off
        US$1,078 US$364
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Fri, Sep 18 | Delta Air Lines
        SEA 05:45
        5h 38m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Thu, Sep 24 | Delta Air Lines
        US$378
        65% off
        US$1,078 US$378
      • TWF 13:17
        6h 19m
        1 stop
        SEA 18:36
        Twin Falls - Seattle | Thu, Sep 24 | Delta Air Lines
        SEA 07:15
        4h 8m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Wed, Sep 30 | Delta Air Lines
        US$425
        61% off
        US$1,078 US$425
      • TWF 06:16
        3h 43m
        1 stop
        SEA 08:59
        Twin Falls - Seattle | Thu, Sep 17 | Delta Air Lines
        SEA 07:15
        4h 8m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Sat, Sep 19 | Delta Air Lines
        US$427
        60% off
        US$1,078 US$427
      • TWF 06:05
        17h
        1 stop
        SEA 22:05
        Twin Falls - Seattle | Wed, Oct 7 | Delta Air Lines
        SEA 07:15
        4h 10m
        1 stop
        TWF 12:25
        Seattle - Twin Falls | Tue, Oct 13 | Delta Air Lines
        US$436
        60% off
        US$1,078 US$436
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Tue, Sep 15 | Delta Air Lines
        SEA 19:59
        25h 19m
        1 stop
        TWF 22:18
        Seattle - Twin Falls | Fri, Sep 18 | Delta Air Lines
        US$907
        16% off
        US$1,078 US$907
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Mon, Sep 21 | Delta Air Lines
        SEA 11:22
        9h 56m
        1 stop
        TWF 22:18
        Seattle - Twin Falls | Fri, Sep 25 | Delta Air Lines
        US$908
        16% off
        US$1,078 US$908
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Mon, Sep 14 | Delta Air Lines
        SEA 19:59
        15h 24m
        1 stop
        TWF 12:23
        Seattle - Twin Falls | Fri, Sep 18 | Delta Air Lines
        US$948
        12% off
        US$1,078 US$948
      • TWF 13:00
        17h 25m
        1 stop
        SEA 14:00
        Twin Falls - Seattle | Sun, Sep 13 | Normal Airline
        SEA 15:00
        6h
        Nonstop
        TWF 16:00
        Seattle - Twin Falls | Tue, Sep 15 | Normal Airline
        More cheap flights
        More cheap flights
      • TWF 06:05
        4h 5m
        1 stop
        SEA 09:10
        Twin Falls - Seattle | Wed, Oct 21 | Delta Air Lines
        US$195 US$425
        54% off
        54% off
        US$425 US$195
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Thu, Oct 1 | Delta Air Lines
        US$206 US$425
        52% off
        52% off
        US$425 US$206
      • TWF 13:17
        4h 33m
        1 stop
        SEA 16:50
        Twin Falls - Seattle | Sat, Oct 3 | Delta Air Lines
        US$246 US$425
        42% off
        42% off
        US$425 US$246
      • TWF 13:17
        20h 42m
        1 stop
        SEA 08:59
        Twin Falls - Seattle | Wed, Sep 30 | Delta Air Lines
        US$374
        12% off
        US$425 US$374
      • TWF 13:00
        17h 25m
        1 stop
        SEA 14:00
        Twin Falls - Seattle | Sun, Sep 13 | Normal Airline
        More cheap flights
        More cheap flights

Twin Falls to Seattle Flight Information

The distance between Twin Falls and Seattle is about 825.66 km. Based on Trip.com's latest data, travel demand is highest in August. The off-season for travel is November.

Cheapest one-way flight price US$195
Cheapest return ticket price US$304
Cheapest month November
Peak season for travel August
Flight distance 825.66 km
Flight statistics for the Twin Falls–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 Twin Falls to Seattle (TWF-SEA)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$195 on Cheapest nonstop routes (e.g. TWF to SEA on Wed, Oct 21), while Delta Air Lines offers Cheapest nonstop round-trips from US$304 departing on Sat, Oct 3 and returning on Sat, Oct 10.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Twin Falls 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 Twin Falls 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 Wed, Oct 21, with one-way flights priced at just US$195.
    · 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 August.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Twin Falls to Seattle is November, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Twin Falls to Seattle on September 12, 2026 with Delta Air Lines, with prices starting at US$296.
  • The time difference between Seattle and Twin Falls is 1h.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Twin Falls to Seattle is US$243. Fares vary by travel date, airline and availability.
  • Enter Twin Falls and Seattle, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

Explore More Popular Flights

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.