Photo by Zachary Williams

Popular airlines to Union
- Alaska Airlines
Alaska Airlines
- Delta
Delta
- American Airlines
American Airlines
- United
United
- Southwest Airlines
Southwest Airlines
- Frontier Airlines
Frontier Airlines
- Air Canada
Air Canada
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How much is the cheapest flight to Union?
Prices were available within the past 7 days and start at NT$1,486 for one-way flights and NT$2,972 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 28 - Wed, Mar 4
LAS
Las Vegas
SEA
Seattle
NT$2,972 Roundtrip, found 5 days ago
NT$2,972
Roundtrip
found 5 days ago

Fri, Nov 21 - Sat, Nov 22
PHX
Phoenix
SEA
Seattle
NT$2,975 Roundtrip, found 2 days ago
NT$2,975
Roundtrip
found 2 days ago

Sat, Nov 15 - Mon, Nov 17
PHX
Phoenix
SEA
Seattle
NT$5,430 Roundtrip, found 4 days ago
NT$5,430
Roundtrip
found 4 days ago

Thu, Apr 9 - Sat, Apr 18
TPE
Taipei
SEA
Seattle
NT$17,351 Roundtrip, found 6 days ago
NT$17,351
Roundtrip
found 6 days ago

Thu, May 28 - Sun, Jun 7
TPE
Taipei
SEA
Seattle
NT$21,461 Roundtrip, found 5 days ago
NT$21,461
Roundtrip
found 5 days ago
Frequently asked questions
Destination airport | Seattle - Tacoma Intl. |
|---|---|
Destination airport IATA code | SEA |
Destination city name | Seattle |
Roundtrip price | NT$2,975 |
Get up to 100% off your flight to Union when booking a Flight + Hotel
Heading to Union? Explore Union with Expedia's Travel Guides to find the best hotels, vacation packages, car rental deals and more!
Trending flights to Union
Prices were available within the past 7 days and start at NT$1,486 for one-way flights and NT$2,972 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Apr 9 - Sat, Apr 18
TPE
Taipei
SEA
Seattle
NT$17,351 Roundtrip, found 6 days ago
NT$17,351
Roundtrip
found 6 days ago
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From Other Airports to Union
- Phoenix to Seattle (PHX - SEA)
- Newark Liberty Intl. Airport to Seattle (EWR - SEA)
- Taipei to Seattle (TSA - SEA)
- Bangkok to Seattle (BKK - SEA)
- Hong Kong to Seattle (HKG - SEA)
- Taipei to Seattle (TPE - SEA)
- Kaohsiung to Seattle (KHH - SEA)
- Denver to Seattle (DEN - SEA)
- San Jose to Seattle (SJC - SEA)
- New York to Seattle (JFK - SEA)
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