Cheap Flights from Union from ฿1,755

View ฿1,755 flight on Sat, 8 Nov 2025Opens in a new window

Popular airlines from Union

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Air Canada

    Air Canada

  • Frontier Airlines

    Frontier Airlines

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Cheapest flights from Union

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 14 Nov - Sun, 16 Nov
SEA
Seattle
DEN
Denver
฿3,505 Return, found 1 day ago
฿3,505
Return
found 1 day ago
Select Delta flight, departing Fri, 14 Nov from Seattle to Denver, returning Sun, 16 Nov, priced at ฿3,505 found 1 day ago
Delta
Fri, 7 Nov - Fri, 14 Nov
SEA
Seattle
DEN
Denver
฿3,540 Return, found 17 hours ago
฿3,540
Return
found 17 hours ago
Select Delta flight, departing Fri, 7 Nov from Seattle to Denver, returning Fri, 14 Nov, priced at ฿3,540 found 17 hours ago
Delta
Sat, 1 Nov - Mon, 3 Nov
SEA
Seattle
DEN
Denver
฿3,570 Return, found 2 days ago
฿3,570
Return
found 2 days ago
Select Delta flight, departing Sat, 1 Nov from Seattle to Denver, returning Mon, 3 Nov, priced at ฿3,570 found 2 days ago
Delta
Sat, 1 Nov - Sat, 8 Nov
SEA
Seattle
SFO
San Francisco
฿3,815 Return, found 6 days ago
฿3,815
Return
found 6 days ago
Select Delta flight, departing Sat, 1 Nov from Seattle to San Francisco, returning Sat, 8 Nov, priced at ฿3,815 found 6 days ago
Delta
Tue, 11 Nov - Tue, 18 Nov
SEA
Seattle
LAS
Las Vegas
฿3,835 Return, found 2 days ago
฿3,835
Return
found 2 days ago
Select Delta flight, departing Tue, 11 Nov from Seattle to Las Vegas, returning Tue, 18 Nov, priced at ฿3,835 found 2 days ago
Delta
Sat, 1 Nov - Sat, 8 Nov
SEA
Seattle
SFO
San Francisco
฿4,135 Return, found 6 days ago
฿4,135
Return
found 6 days ago
Select Delta flight, departing Sat, 1 Nov from Seattle to San Francisco, returning Sat, 8 Nov, priced at ฿4,135 found 6 days ago
Delta
Fri, 7 Nov - Fri, 14 Nov
SEA
Seattle
SFO
San Francisco
฿4,155 Return, found 17 hours ago
฿4,155
Return
found 17 hours ago
Select Delta flight, departing Fri, 7 Nov from Seattle to San Francisco, returning Fri, 14 Nov, priced at ฿4,155 found 17 hours ago
United
Fri, 14 Nov - Sun, 16 Nov
SEA
Seattle
DEN
Denver
฿4,520 Return, found 1 day ago
฿4,520
Return
found 1 day ago
Select United flight, departing Fri, 14 Nov from Seattle to Denver, returning Sun, 16 Nov, priced at ฿4,520 found 1 day ago
American Airlines
Sat, 1 Nov - Sat, 8 Nov
SEA
Seattle
SFO
San Francisco
฿7,360 Return, found 6 days ago
฿7,360
Return
found 6 days ago
Select American Airlines flight, departing Sat, 1 Nov from Seattle to San Francisco, returning Sat, 8 Nov, priced at ฿7,360 found 6 days ago
Alaska Airlines
Sat, 1 Nov - Mon, 3 Nov
PAE
Seattle
DEN
Denver
฿29,780 Return, found 2 days ago
฿29,780
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 1 Nov from Seattle to Denver, returning Mon, 3 Nov, priced at ฿29,780 found 2 days ago

Travel information

Flights from Union: Essential Travel Information

Cheapest flight from Union
฿3,505 (roundtrip)
Best airlines to fly from Union
Delta, United, American Airlines, Alaska Airlines
Cheapest month to fly from Union
November
Union IATA code
SEA
Union Country/State
Washington
Airline ticket deals from Union
฿3,505 - ฿29,780

 

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