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Seattle to Houston flights in December 2026 from $302 BFI, SEA → IAH

Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → George Bush Intercontinental Airport (IAH)

For departures in December 2026, the cheapest return found recently is $641 with SeaPort Airlines, 7 Dec – 10 Dec, found 2 days ago. The cheapest one-way found recently is $302 with SeaPort Airlines, 30 Dec, found 4 days ago.

Return

In December 2026, the cheapest return fare on each of 7 departure dates is usually $661 to $735. Across all 10 departure dates we hold on this route, it is usually $605 to $722.

Cheapest return found recently

$641

7 Dec – 10 Dec · SeaPort Airlines

Boeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)

out 2 stops, back 2 stops

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$378

28 Dec – 1 Jan 2027 · Frontier Airlines

Seattle-Tacoma International Airport (SEA) → George Bush Intercontinental Airport (IAH)

out 1 stop, back 1 stop

found 7 days ago

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
28 Dec – 1 Jan 2027$378Frontier Airlinesout 1 stop, back 1 stopfound 7 days agoSee prices for these dates
7 Dec – 10 Dec$641SeaPort Airlinesout 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
30 Dec – 3 Jan 2027$681SeaPort Airlinesout 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
1 Dec – 5 Dec$717SeaPort Airlinesout 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
6 Dec – 9 Dec$723SeaPort Airlinesout 2 stops, back 2 stopsfound 3 days agoSee prices for these dates

Every date we hold

7 departure dates

1 Dec – 5 Dec: $717, found 5 days ago6 Dec – 9 Dec: $723, found 3 days ago7 Dec – 10 Dec: $641, found 2 days ago28 Dec – 1 Jan 2027: $378, found 7 days ago29 Dec – 3 Jan 2027: $747, found 6 days ago30 Dec – 3 Jan 2027: $681, found 3 days ago31 Dec – 4 Jan 2027: $816, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 5 Dec$717SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
6 Dec – 9 Dec$723SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
7 Dec – 10 Dec$641SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
28 Dec – 1 Jan 2027$378Frontier AirlinesSeattle-Tacoma International Airport (SEA) → George Bush Intercontinental Airport (IAH)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
29 Dec – 3 Jan 2027$747SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 6 days agoSee prices for these dates
30 Dec – 3 Jan 2027$681SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
31 Dec – 4 Jan 2027$816SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $378.

November 2026From $4121 departure date23 Nov – 26 Nov · found 7 days agoSee prices for these dates
December 2026From $378Cheapest seen7 departure dates28 Dec – 1 Jan 2027 · found 7 days agoSee prices for these dates
January 2027From $5931 departure date22 Jan 2027 – 25 Jan 2027 · found 4 days agoSee prices for these dates
February 2027From $6891 departure date11 Feb 2027 – 15 Feb 2027 · found 4 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 3 departure dates is usually $322 to $405. Across all 5 departure dates we hold on this route, it is usually $302 to $468.

Cheapest one-way found recently

$302

30 Dec · SeaPort Airlines

Boeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)

2 stops

found 4 days ago

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It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
30 Dec$302SeaPort Airlines2 stopsfound 4 days agoOpen this trip
29 Dec$341SeaPort Airlines2 stopsfound 4 days agoOpen this trip
31 Dec$468SeaPort Airlines2 stopsfound 5 days agoOpen this trip

Every date we hold

3 departure dates

29 Dec: $341, found 4 days ago30 Dec: $302, found 4 days ago31 Dec: $468, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
29 Dec$341SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)2 stopsfound 4 days agoOpen this trip
30 Dec$302SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)2 stopsfound 4 days agoOpen this trip
31 Dec$468SeaPort AirlinesBoeing Field International Airport (BFI) → George Bush Intercontinental Airport (IAH)2 stopsfound 5 days agoOpen this trip

Which month looks cheapest?

February 2027 is the cheapest month — from $176.

November 2026From $5131 departure date27 Nov · found 7 days agoOpen this trip
December 2026From $3023 departure dates30 Dec · found 4 days agoOpen this trip
February 2027From $176Cheapest seen1 departure date15 Feb 2027 · found 4 days agoOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work