
$136 Cheap Frontier Airlines flights St. Louis (STL) to Seattle (SEA)
$136 Cheap Frontier Airlines flights St. Louis (STL) to Seattle (SEA)
Prices were available within the past 7 days and start at $136 for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Jun 7 - Tue, Jun 16
STL
St. Louis
SEA
Seattle
$220 Roundtrip, found 18 hours ago
$220
Roundtrip
found 18 hours ago

Sun, Jun 7 - Mon, Jun 15
STL
St. Louis
SEA
Seattle
$240 Roundtrip, found 18 hours ago
$240
Roundtrip
found 18 hours ago

Sun, Jun 7 - Fri, Jun 12
STL
St. Louis
SEA
Seattle
$260 Roundtrip, found 18 hours ago
$260
Roundtrip
found 18 hours ago

Mon, Jul 27 - Tue, Aug 4
STL
St. Louis
SEA
Seattle
$280 Roundtrip, found 13 hours ago
$280
Roundtrip
found 13 hours ago

Thu, Jul 23 - Tue, Aug 4
STL
St. Louis
SEA
Seattle
$300 Roundtrip, found 13 hours ago
$300
Roundtrip
found 13 hours ago

Fri, Jun 5 - Tue, Jun 16
STL
St. Louis
SEA
Seattle
$316 Roundtrip, found 18 hours ago
$316
Roundtrip
found 18 hours ago

Sun, Jun 7 - Sun, Jun 14
STL
St. Louis
SEA
Seattle
$325 Roundtrip, found 18 hours ago
$325
Roundtrip
found 18 hours ago

Fri, Jun 5 - Mon, Jun 15
STL
St. Louis
SEA
Seattle
$336 Roundtrip, found 18 hours ago
$336
Roundtrip
found 18 hours ago

Tue, Jul 28 - Thu, Aug 6
STL
St. Louis
SEA
Seattle
$345 Roundtrip, found 13 hours ago
$345
Roundtrip
found 13 hours ago

Fri, Jun 5 - Wed, Jun 17
STL
St. Louis
SEA
Seattle
$356 Roundtrip, found 18 hours ago
$356
Roundtrip
found 18 hours ago
Find the cheapest month to fly from St. Louis (STL) to Seattle (SEA)
April is typically the cheapest month to fly
From $177 - $287 per traveler.
Travel information
Origin airport | Lambert-St. Louis Intl. |
|---|---|
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, United |
Popular airline | Delta |
Distance | 2728 km |
Average flight time | 3 hours 26 mins |
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Most Popular Frontier Airlines Routes from St. Louis
Most Popular Frontier Airlines Routes from Seattle
- Detroit to Las Vegas (DTW - LAS)
- New York to Atlanta (JFK - ATL)
- Chicago to Dallas (ORD - DFW)
- New York to Atlanta (LGA - ATL)
- Detroit to Atlanta (DTW - ATL)
- Seattle to Los Angeles (SEA - LAX)
- Orlando to San Juan (MCO - SJU)
- Houston to San Francisco (IAH - SFO)
- Dallas to Minneapolis (DFW - MSP)
- San Juan to Tampa (SJU - TPA)
Popular Domestic Routes in Seattle - Tacoma Intl.
- Detroit to Atlanta (DTW - ATL)
- Orlando to San Juan (MCO - SJU)
- New York to Atlanta (JFK - ATL)
- Newark Liberty Intl. Airport to Orlando (EWR - MCO)
- Houston to San Francisco (IAH - SFO)
- Detroit to Las Vegas (DTW - LAS)
- Houston to Los Angeles (IAH - LAX)
- Detroit to Atlanta (DTW - ATL)
- Chicago to Dallas (ORD - DFW)
- Detroit to Orlando (DTW - MCO)