Cheap International Flights from Houston 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 Houston in September
IAH → DUB
Dublin
Ireland
Est. $382
round trip
~10h flight time
IAH → GLA
Glasgow
United Kingdom
Est. $384
round trip
~10h flight time
IAH → EDI
Edinburgh
United Kingdom
Est. $387
round trip
~10h flight time
IAH → MAN
Manchester
United Kingdom
Est. $395
round trip
~10h flight time
IAH → OPO
Porto
Portugal
Est. $398
round trip
~10h flight time
IAH → BHX
Birmingham
United Kingdom
Est. $399
round trip
~10h flight time
IAH → LIS
Lisbon
Portugal
Est. $401
round trip
~11h flight time
IAH → LHR
London
United Kingdom
Est. $405
round trip
~11h flight time
IAH → FAO
Faro
Portugal
Est. $410
round trip
~11h flight time
Best Regions from Houston in September
Related Reading
Frequently Asked Questions
What are the cheapest destinations from Houston in September?
In September, some of the most affordable destinations from Houston include Dublin (est. $382 RT), Glasgow (est. $384 RT), Edinburgh (est. $387 RT). Prices vary by booking window.
Is September cheap to fly from Houston?
A strong month for Europe. Shoulder season starts and prices often ease from peak.
How far ahead should I book flights from Houston in September?
For September departures from Houston, 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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