Cheap flights from Seattle to Miami from $264 BFI, SEA → MIA
Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA)
The cheapest return found recently is $450 with American Airlines, 8 Mar 2027 – 15 Mar 2027, found 2 days ago. The cheapest one-way found recently is $264 with Southwest Airlines, 26 Apr 2027, found yesterday.
- Cheapest one-way found recently
- $264, found yesterday
- Cheapest return found recently
- $450, 8 Mar 2027 to 15 Mar 2027
- Usual return price
- $519 to $588
- Cheapest month to fly
- March 2027, return fares from $450 found in the last 7 days
- Airlines with nonstop flights
- Alaska Airlines, American Airlines
Return
The cheapest return fare on each of 7 departure dates is usually $519 to $588.
Cheapest return found recently
$450
8 Mar 2027 – 15 Mar 2027 · American Airlines
Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA)
Leaves 9:14 p.m. · Return leaves 8:27 p.m. · 12 h 49 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Cheapest nonstop return
$450
8 Mar 2027 – 15 Mar 2027 · American Airlines
Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA)
Leaves 9:14 p.m. · Return leaves 8:27 p.m. · 12 h 49 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$450 8 Mar 2027 – 15 Mar 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $232 to $495.
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 7 departure dates from 17 Nov to 8 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 8 Mar 2027 to compare.
Every date we hold
40 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Nov – 19 Nov | $602 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out 2 stops, back 2 stops | found 6 days ago | See prices for these dates |
| 18 Nov – 25 Nov | $569 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out 2 stops, back 2 stops | found 5 days ago | See prices for these dates |
| 19 Nov – 1 Dec | $548 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out 3 stops, back 2 stops | found 5 days ago | See prices for these dates |
| 29 Nov – 5 Dec | $490 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out nonstop, back 1 stop | found 7 days ago | See prices for these dates |
| 18 Dec – 17 Jan 2027 | $573 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out 2 stops, back 2 stops | found 6 days ago | See prices for these dates |
| 30 Dec – 6 Jan 2027 | $696 | SeaPort Airlines | Boeing Field International Airport (BFI) → Miami International Airport (MIA) | out 3 stops, back 3 stops | found 5 days ago | See prices for these dates |
| 8 Mar 2027 – 15 Mar 2027 | $450 | American Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
March 2027 is the cheapest month — from $450.
Airlines on the cheapest dates: Frontier Airlines, Alaska Airlines, SeaPort Airlines, American Airlines.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $264 to $312.
Cheapest one-way found recently
$264
26 Apr 2027 · Southwest Airlines
Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA)
Leaves 12:05 a.m. · 9 h 5 min trip
1 stop
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$264 26 Apr 2027found yesterdayOpen this trip
$238 28 Novfound 6 days agoOpen this trip
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $125 to $364.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 14 Nov to 26 Apr 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 one-way fares leaving within 3 days of 26 Apr 2027 to compare.
Every date we hold
7 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Nov | $316 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | stops unknown | found 2 days ago | Open this trip |
| 28 Nov | $238 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | 1 stop | found 6 days ago | Open this trip |
| 18 Dec | $312 | Southwest Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | 1 stop | found 4 days ago | Open this trip |
| 19 Dec | $274 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | 3 stops | found 5 days ago | Open this trip |
| 26 Apr 2027 | $264 | Southwest Airlines | Seattle-Tacoma International Airport (SEA) → Miami International Airport (MIA) | 1 stop | found yesterday | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $238.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from Seattle to Miami
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 8 Mar 2027 – 15 Mar 2027 in another cabin: Premium economy · Business · First
Today's prices for 26 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Miami?
Return
Fares 30 to 59 days before departure were typically 35% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 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 | $586 | $407 | +53% | 19 |
| 7–13 days | $548 | $288 | +43% | 25 |
| 14–29 days | $417 | $232 | +9% | 46 |
| 30–59 days | $383 | $304 | Cheapest seen | 33 |
| 60–89 days | $495 | $366 | +29% | 23 |
| 90–179 days | $416 | $414 | +9% | 23 |
One-way
The cheapest fares were 7 to 13 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (49 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 |
|---|---|---|---|---|
| 7–13 days | $151 | $150 | Cheapest seen | 12 |
| 14–29 days | $238 | $125 | +58% | 36 |
| 30–59 days | $171 | $144 | +13% | 26 |
| 90–179 days | $219 | $209 | +45% | 16 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Seattle → Fort Lauderdale
40 km from Miami
$448
$2 less than flying to Miami
2 Jan 2027 – 9 Jan 2027 · SEA → FLL · out nonstop, back 1 stop
found 4 days ago
Everett → Miami
34 km from Seattle
$755
$305 more than flying from Seattle
30 Dec – 6 Jan 2027 · PAE → MIA · out 1 stop, back nonstop
found 5 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Seattle → Fort Lauderdale
40 km from Miami
$274
$10 more than flying to Miami
16 Sept 2027 · SEA → FLL · nonstop
found 2 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 8 Mar 2027 – 15 Mar 2027. 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 Seattle to Miami?
The cheapest return found recently is $450 with American Airlines, 8 Mar 2027 to 15 Mar 2027, found 2 days ago. The cheapest return fare on each of 7 departure dates is usually $519 to $588.
How much is a one-way flight from Seattle to Miami?
The cheapest one-way found recently is $264 with Southwest Airlines, 26 Apr 2027, found yesterday. The cheapest one-way we hold, of any age, is $238 with Frontier Airlines, 28 Nov, found 6 days ago. The cheapest one-way fare on each of 5 departure dates is usually $264 to $312.
What is the cheapest month to fly from Seattle to Miami?
March 2027 is the cheapest month for a return, from $450, 8 Mar 2027 to 15 Mar 2027, found 2 days ago. November 2026 is the cheapest month for a one-way, from $238, 28 Nov, found 6 days ago.
How far ahead should I book a flight from Seattle to Miami?
In 49 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 35% lower than 0 to 6 days before departure. One-way fares were cheapest 7 to 13 days before departure.
Is there a direct flight from Seattle to Miami?
Yes, the cheapest nonstop return found recently is $450 with American Airlines, 8 Mar 2027 to 15 Mar 2027, found 2 days ago.
How long is the flight from Seattle to Miami?
The cheapest one-way found recently, with Southwest Airlines on 26 Apr 2027, takes 9 h 5 min with 1 stop.
Which airlines have the cheapest flights from Seattle to Miami?
Between 17 Nov and 8 Mar 2027, Frontier Airlines has the cheapest return on 4 of the 7 departure dates we hold, Alaska Airlines on 1 and SeaPort Airlines on 1. Between 14 Nov and 26 Apr 2027, Frontier Airlines has the cheapest one-way on 3 of the 5 departure dates we hold, and Southwest Airlines on 2.
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