Cheap flights from Houston to Seattle from $328 IAH → SEA
George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA)
The cheapest return found recently is $328 with Frontier Airlines, 14 Dec – 21 Dec, found today.
- Cheapest return found recently
- $328, 14 Dec to 21 Dec
- Usual return price
- $381 to $571
- Cheapest month to fly
- December 2026, return fares from $328 found in the last 7 days
Return
The cheapest return fare on each of 6 departure dates is usually $381 to $571.
Cheapest return found recently
$328
14 Dec – 21 Dec · Frontier Airlines
George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA)
Leaves 6:00 a.m. · Return leaves 6:25 p.m. · 21 h 4 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
$617
6 Mar 2027 – 13 Mar 2027 · Alaska Airlines
George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA)
Leaves 7:00 a.m. · Return leaves 5:41 p.m. · 9 h 17 min of travel, both ways together
out nonstop, back nonstop
found today
Found recently, and the cheapest we hold
$328 14 Dec – 21 Decfound todaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 40 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $263 to $435.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 6 departure dates from 23 Nov to 13 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 7-night return fares leaving within 3 days of 14 Dec to compare.
Every date we hold
6 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Nov – 23 Nov | $444 | Frontier Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 14 Dec – 21 Dec | $328 | Frontier Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 25 Dec – 29 Dec | $360 | Frontier Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 30 Dec – 2 Jan 2027 | $458 | Frontier Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 6 Mar 2027 – 13 Mar 2027 | $617 | Alaska Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out nonstop, back nonstop | found today | See prices for these dates |
| 13 Mar 2027 – 19 Mar 2027 | $608 | Frontier Airlines | George Bush Intercontinental Airport (IAH) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back nonstop | found today | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $328.
Airlines on the cheapest dates: Frontier Airlines, Alaska Airlines.
Premium cabin fares from Houston to Seattle
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 14 Dec – 21 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Houston to Seattle?
Return
Fares 14 to 29 days before departure were typically 27% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (40 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $371 | $353 | +37% | 11 |
| 7–13 days | $327 | $312 | +21% | 17 |
| 14–29 days | $270 | $263 | Cheapest seen | 13 |
| 30–59 days | $295 | $295 | +9% | 15 |
| 60–89 days | $341 | $301 | +26% | 11 |
Live price for these dates
The cheapest return found recently is for 14 Dec – 21 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Houston to Seattle?
The cheapest return found recently is $328 with Frontier Airlines, 14 Dec to 21 Dec, found today. The cheapest return fare on each of 6 departure dates is usually $381 to $571.
What is the cheapest month to fly from Houston to Seattle?
December 2026 is the cheapest month for a return, from $328, 14 Dec to 21 Dec, found today.
How far ahead should I book a flight from Houston to Seattle?
In 40 days of prices between 24 Sept and 12 Nov, return fares 14 to 29 days before departure were typically 27% lower than 0 to 6 days before departure.
Is there a direct flight from Houston to Seattle?
Yes, the cheapest nonstop return found recently is $617 with Alaska Airlines, 6 Mar 2027 to 13 Mar 2027, found today.
Which airlines have the cheapest flights from Houston to Seattle?
Between 23 Nov and 13 Mar 2027, Frontier Airlines has the cheapest return on 5 of the 6 departure dates we hold, and Alaska Airlines on 1.
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