Cheap Flights from Union from ฿2,635

View ฿2,635 flight on Thu, 22 Oct 2026Opens in a new window

Popular airlines from Union

  • Alaska Airlines

  • American Airlines

  • United

  • Delta

  • Southwest Airlines

  • Air Canada

  • 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
Thu, 29 Oct - Sat, 14 Nov
SEA
Seattle
SFO
San Francisco
฿5,265 Return, found 4 days ago
฿5,265
Return
found 4 days ago
Select Delta flight, departing Thu, 29 Oct from Seattle to San Francisco, returning Sat, 14 Nov, priced at ฿5,265 found 4 days ago
Southwest Airlines
Sat, 5 Dec - Mon, 7 Dec
SEA
Seattle
SAN
San Diego
฿5,940 Return, found 1 hour ago
฿5,940
Return
found 1 hour ago
Select Southwest Airlines flight, departing Sat, 5 Dec from Seattle to San Diego, returning Mon, 7 Dec, priced at ฿5,940 found 1 hour ago
Delta
Sat, 5 Dec - Mon, 7 Dec
SEA
Seattle
SAN
San Diego
฿5,960 Return, found 1 hour ago
฿5,960
Return
found 1 hour ago
Select Delta flight, departing Sat, 5 Dec from Seattle to San Diego, returning Mon, 7 Dec, priced at ฿5,960 found 1 hour ago
Delta
Sun, 6 Dec - Thu, 10 Dec
SEA
Seattle
SFO
San Francisco
฿6,105 Return, found 3 days ago
฿6,105
Return
found 3 days ago
Select Delta flight, departing Sun, 6 Dec from Seattle to San Francisco, returning Thu, 10 Dec, priced at ฿6,105 found 3 days ago
Delta
Thu, 26 Nov - Sat, 12 Dec
SEA
Seattle
SFO
San Francisco
฿6,270 Return, found 4 days ago
฿6,270
Return
found 4 days ago
Select Delta flight, departing Thu, 26 Nov from Seattle to San Francisco, returning Sat, 12 Dec, priced at ฿6,270 found 4 days ago
Southwest Airlines
Sat, 5 Dec - Mon, 7 Dec
SEA
Seattle
SAN
San Diego
฿6,445 Return, found 1 hour ago
฿6,445
Return
found 1 hour ago
Select Southwest Airlines flight, departing Sat, 5 Dec from Seattle to San Diego, returning Mon, 7 Dec, priced at ฿6,445 found 1 hour ago
Southwest Airlines
Sat, 7 Nov - Mon, 9 Nov
SEA
Seattle
SAN
San Diego
฿6,450 Return, found 4 hours ago
฿6,450
Return
found 4 hours ago
Select Southwest Airlines flight, departing Sat, 7 Nov from Seattle to San Diego, returning Mon, 9 Nov, priced at ฿6,450 found 4 hours ago
United
Thu, 5 Nov - Wed, 11 Nov
SEA
Seattle
LAX
Los Angeles
฿8,610 Return, found 4 days ago
฿8,610
Return
found 4 days ago
Select United flight, departing Thu, 5 Nov from Seattle to Los Angeles, returning Wed, 11 Nov, priced at ฿8,610 found 4 days ago
American Airlines
Sun, 6 Dec - Thu, 10 Dec
SEA
Seattle
SFO
San Francisco
฿10,285 Return, found 3 days ago
฿10,285
Return
found 3 days ago
Select American Airlines flight, departing Sun, 6 Dec from Seattle to San Francisco, returning Thu, 10 Dec, priced at ฿10,285 found 3 days ago
Alaska Airlines
Sat, 28 Nov - Sat, 12 Dec
SEA
Seattle
SFO
San Francisco
฿14,970 Return, found 4 days ago
฿14,970
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 28 Nov from Seattle to San Francisco, returning Sat, 12 Dec, priced at ฿14,970 found 4 days ago

Travel information

Flights from Union: Essential Travel Information

Cheapest flight from Union
฿5,265 (roundtrip)
Best airlines to fly from Union
Delta, Southwest Airlines, Alaska Airlines, United, American Airlines
Cheapest month to fly from Union
October
Union IATA code
SEA
Union Country/State
Washington
Airline ticket deals from Union
฿5,265 - ฿14,970

 

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