Miami to Seattle MIA → SEA
Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA)
The cheapest return found recently is $381 with American Airlines, 10 Nov – 16 Nov, found yesterday. The cheapest one-way found recently is $257 with American Airlines, 15 May 2027, found 3 days ago.
Return
The cheapest return fare on each of 6 departure dates is usually $447 to $527.
Cheapest return found recently
$381
10 Nov – 16 Nov · American Airlines
Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA)
Leaves 8:14 p.m. · Return leaves 9:14 p.m. · 12 h 31 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$381
10 Nov – 16 Nov · American Airlines
Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA)
Leaves 8:14 p.m. · Return leaves 9:14 p.m. · 12 h 31 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$381 10 Nov – 16 Novfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $243 to $486.
25 days is a short history, so treat this range as an early guide.
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 21 Oct to 15 May 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 6-night return fares leaving within 3 days of 10 Nov to compare.
Every date we hold
7 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Oct – 23 Oct | $469 | Alaska Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 31 Oct – 2 Nov | $439 | Alaska Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out nonstop, back nonstop | found yesterday | See prices for these dates |
| 1 Nov – 1 Nov | $713 | American Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back nonstop | found today | See prices for these dates |
| 10 Nov – 16 Nov | $381 | American Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out nonstop, back nonstop | found yesterday | See prices for these dates |
| 2 Apr 2027 – 9 Apr 2027 | $536 | Alaska Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 15 May 2027 – 22 May 2027 | $498 | American Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back nonstop | found 3 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $381.
Airlines on the cheapest dates: Alaska Airlines, American Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$257
15 May 2027 · American Airlines
Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA)
Leaves 6:40 a.m. · 9 h 16 min trip
1 stop
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$257 15 May 2027found 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 20 days, 25 Sept to 18 Oct, the cheapest one-way we saw each day was $118 to $258.
At $257, the cheapest one-way found recently is at the high end of that range.
20 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 15 May 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 15 May 2027 | $257 | American Airlines | Miami International Airport (MIA) → Seattle-Tacoma International Airport (SEA) | 1 stop | found 3 days ago | Open this trip |
Airlines on the cheapest dates: American Airlines.
Premium cabin fares from Miami 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 10 Nov – 16 Nov in another cabin: Premium economy · Business · First
Today's prices for 15 May 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Miami to Seattle?
Return
The cheapest fares were 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 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 |
|---|---|---|---|---|
| 14–29 days | $415 | $381 | Cheapest seen | 11 |
| 60–89 days | $432 | $432 | +4% | 9 |
| 90–179 days | $421 | $421 | +1% | 9 |
| 180+ days | $486 | $486 | +17% | 11 |
One-way
Not enough history yet: in 20 days of one-way prices, 25 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Fort Lauderdale → Seattle
40 km from Miami
$508
$127 more than flying from Miami
10 Nov – 16 Nov · FLL → SEA · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Fort Lauderdale → Seattle
40 km from Miami
$373
$116 more than flying from Miami
15 May 2027 · FLL → SEA · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 10 Nov – 16 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
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