Cheap International Flights from Seattle in September
Fares shown are modelled estimates, not live quotes.
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September Travel Tip
A strong month for Europe. Shoulder season starts and prices often ease from peak.
Best Destinations from Seattle in September
SEA → GLA
Glasgow
United Kingdom
Est. $374
round trip
~10h flight time
SEA → EDI
Edinburgh
United Kingdom
Est. $376
round trip
~10h flight time
SEA → DUB
Dublin
Ireland
Est. $380
round trip
~10h flight time
SEA → MAN
Manchester
United Kingdom
Est. $390
round trip
~10h flight time
SEA → BHX
Birmingham
United Kingdom
Est. $395
round trip
~10h flight time
SEA → LHR
London
United Kingdom
Est. $402
round trip
~11h flight time
SEA → TLL
Tallinn
Estonia
Est. $405
round trip
~11h flight time
SEA → CPH
Copenhagen
Denmark
Est. $408
round trip
~11h flight time
SEA → AMS
Amsterdam
Netherlands
Est. $410
round trip
~11h flight time
Best Regions from Seattle in September
Related Reading
Frequently Asked Questions
What are the cheapest destinations from Seattle in September?
In September, some of the most affordable destinations from Seattle include Glasgow (est. $374 RT), Edinburgh (est. $376 RT), Dublin (est. $380 RT). Prices vary by booking window.
Is September cheap to fly from Seattle?
A strong month for Europe. Shoulder season starts and prices often ease from peak.
How far ahead should I book flights from Seattle in September?
For September departures from Seattle, booking 6–10 weeks in advance typically yields the best fares. For peak months like July and December, book 3–4 months early. Fare reviews and notifications are paused during the provider migration.
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