App
Customer Support
SGD
Find Bookings
Trip.com
>
Cheap Flights
>
United States
>
Washington
>
Seattle
>
Flights from Alliance to Seattle
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Alliance to Seattle Starting at SGD 300

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • AIA07:30
        25h 49m
        1 stop
        SEA08:19
        Sun, Mar 16|Alliance - Seattle|Denver Air Connection
        SGD 300SGD 390
        23% OFF
        23% OFF
        SGD 390SGD 300

        Choose Denver Air Connection flights from Alliance to Seattle. The one-way connecting flight with Denver Air Connection departs from Alliance Municipal Airport on Sun, Mar 16, arriving at Seattle-Tacoma International Airport. One-way Prices start from SGD 300 including taxes and charges.

      • AIA01:00 pm
        3h 5m
        Nonstop
        SEA02:00 pm
        Sat, Feb 22|Alliance - Seattle|Denver Air Connection
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Alliance to Seattle flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. KG4235

    Denver Air Connection

    07:30

    AIA

    1.0h

    08:30

    DEN

    SMTWTFS
    Search

  2. UA204

    United Airlines

    08:00

    DEN

    3.0h

    09:59

    SEA

    SMTWTFS

  3. KG4235

    Denver Air Connection

    07:30

    AIA

    1.0h

    08:30

    DEN

    SMTWTFS
    Search

  4. DL1731

    Delta Air Lines

    06:00

    DEN

    3.3h

    08:19

    SEA

    SMTWTFS

  5. KG4235

    Denver Air Connection

    07:30

    AIA

    1.0h

    08:30

    DEN

    SMTWTFS
    Search

  6. UA299

    United Airlines

    19:13

    DEN

    3.0h

    21:12

    SEA

    SMTWTFS

  7. KG4235

    Denver Air Connection

    07:30

    AIA

    1.0h

    08:30

    DEN

    SMTWTFS
    Search

  8. UA690

    United Airlines

    11:21

    DEN

    3.0h

    13:20

    SEA

    SMTWTFS

  9. KG4212

    Denver Air Connection

    13:00

    AIA

    1.0h

    14:00

    DEN

    S--WTFS
    Search

  10. UA204

    United Airlines

    08:00

    DEN

    3.0h

    09:59

    SEA

    SMTWTFS

  11. KG4212

    Denver Air Connection

    13:00

    AIA

    1.0h

    14:00

    DEN

    S--WTFS
    Search

  12. DL1731

    Delta Air Lines

    06:00

    DEN

    3.3h

    08:19

    SEA

    SMTWTFS

  13. KG4212

    Denver Air Connection

    13:00

    AIA

    1.0h

    14:00

    DEN

    S--WTFS
    Search

  14. UA299

    United Airlines

    19:13

    DEN

    3.0h

    21:12

    SEA

    SMTWTFS

  15. KG4212

    Denver Air Connection

    13:00

    AIA

    1.0h

    14:00

    DEN

    S--WTFS
    Search

  16. UA745

    United Airlines

    16:09

    DEN

    3.0h

    18:09

    SEA

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Alliance to Seattle

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from Alliance (AIA) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Alliance to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Alliance (AIA) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around SGD 482.

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.

How to find a cheap flight from Alliance to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Alliance to Seattle. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Alliance to Seattle

Cheapest nonstop flight priceSGD 300
Off-season for travelMarch
Peak season for travelMarch
Flight distance1,646.6 km
Popular airlineDenver Air Connection

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.