Cheap flights from Baltimore to Cascade Loop Scenic Byway from CA $228

View CA $228 flight on Sat, Sep. 6, 2025Opens in a new window

Popular airlines from Baltimore to Cascade Loop Scenic Byway

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Spirit Airlines

    Spirit Airlines

  • Sun Country Airlines

    Sun Country Airlines

  • United

    United

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Cheap flights from Baltimore (WAS) to Cascade Loop Scenic Byway (SEA)

Prices were available within the past 7 days and start at CA $228 for one-way flights and CA $605 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu., Oct. 30 - Wed., Nov. 5
DCA
Washington
PAE
Seattle
CA $605 Roundtrip, found 1 hour ago
CA $605
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Thu., Oct. 30 from Washington to Seattle, returning Wed., Nov. 5, priced at CA $605 found 1 hour ago
Alaska Airlines
Thu., Aug. 21 - Wed., Aug. 27
DCA
Washington
PAE
Seattle
CA $612 Roundtrip, found 5 days ago
CA $612
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu., Aug. 21 from Washington to Seattle, returning Wed., Aug. 27, priced at CA $612 found 5 days ago
Alaska Airlines
Thu., Oct. 30 - Wed., Nov. 5
DCA
Washington
PAE
Seattle
CA $660 Roundtrip, found 1 hour ago
CA $660
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Thu., Oct. 30 from Washington to Seattle, returning Wed., Nov. 5, priced at CA $660 found 1 hour ago
Alaska Airlines
Thu., Aug. 21 - Sun., Aug. 24
DCA
Washington
PAE
Seattle
CA $709 Roundtrip, found 5 days ago
CA $709
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu., Aug. 21 from Washington to Seattle, returning Sun., Aug. 24, priced at CA $709 found 5 days ago
Alaska Airlines
Fri., Aug. 8 - Wed., Aug. 13
DCA
Washington
PAE
Seattle
CA $775 Roundtrip, found 3 days ago
CA $775
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri., Aug. 8 from Washington to Seattle, returning Wed., Aug. 13, priced at CA $775 found 3 days ago
American Airlines
Fri., Nov. 28 - Mon., Dec. 15
BWI
Baltimore
BLI
Bellingham
CA $1,172 Roundtrip, found 2 days ago
CA $1,172
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri., Nov. 28 from Baltimore to Bellingham, returning Mon., Dec. 15, priced at CA $1,172 found 2 days ago

Find the cheapest month to fly from Baltimore (BWI) to Seattle (SEA)

September is typically the cheapest month to fly

From CA $206 - CA $352 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.