Seattle to Frankfurt BFI, SEA → FRA
Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA)
The cheapest return found recently is $513 with Lufthansa, 9 Nov – 16 Nov, found yesterday. The cheapest one-way found recently is $599 with Virgin Atlantic, 21 Dec, found 5 days ago.
Return
The cheapest return fare on each of 6 departure dates is usually $514 to $878.
Cheapest return found recently
$513
9 Nov – 16 Nov · Lufthansa
Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA)
Leaves 7:00 a.m. · Return leaves 12:55 p.m. · 33 h 47 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$959
23 Oct – 31 Oct · Condor
Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA)
Leaves 6:00 p.m. · Return leaves 2:10 p.m. · 20 h 45 min of travel, both ways together
out nonstop, back nonstop
found 6 days ago
Found recently, and the cheapest we hold
$513 9 Nov – 16 Novfound yesterdaySee prices for these dates
$507 27 Dec – 7 Jan 2027found 6 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $321 to $859.
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 23 Oct to 28 Dec, 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 9 Nov to compare.
Every date we hold
10 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Oct – 31 Oct | $959 | Condor | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 9 Nov – 16 Nov | $513 | Lufthansa | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 14 Dec – 7 Jan 2027 | $758 | United Airlines | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 21 Dec – 8 Jan 2027 | $918 | Air Canada | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 27 Dec – 7 Jan 2027 | $507 | United Airlines | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 28 Dec – 6 Jan 2027 | $518 | Air Canada | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | out 2 stops, back 2 stops | found 4 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $507.
Airlines on the cheapest dates: United Airlines, Air Canada, Condor, Lufthansa.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$599
21 Dec · Virgin Atlantic
Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA)
Leaves 8:00 a.m. · 14 h 50 min trip
1 stop
found 5 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$599 21 Decfound 5 days agoOpen this trip
$495 7 Jan 2027found 6 days agoOpen this trip
What have prices looked like?
Over 19 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $214 to $495.
At $599, the cheapest one-way found recently is above that range.
19 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 2 departure dates 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 21 Dec to compare.
Every date we hold
3 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Dec | $599 | Virgin Atlantic | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | 1 stop | found 5 days ago | Open this trip |
| 7 Jan 2027 | $495 | United Airlines | Seattle-Tacoma International Airport (SEA) → Frankfurt Airport (FRA) | 1 stop | found 6 days ago | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $495.
Airlines on the cheapest dates: Virgin Atlantic, United Airlines.
Premium cabin fares from Seattle to Frankfurt
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 9 Nov – 16 Nov in another cabin: Premium economy · Business · First
Today's prices for 21 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Frankfurt?
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 | $508 | $503 | Cheapest seen | 20 |
| 30–59 days | $859 | $503 | +69% | 10 |
| 60–89 days | $559 | $507 | +10% | 21 |
| 180+ days | $527 | $321 | +4% | 17 |
One-way
Not enough history yet: in 19 days of one-way prices, 24 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
Everett → Frankfurt
34 km from Seattle
$1,814
$1,301 more than flying from Seattle
14 Dec – 7 Jan 2027 · PAE → FRA · out 2 stops, back 2 stops
found today
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Everett → Frankfurt
34 km from Seattle
$2,167
$1,568 more than flying from Seattle
21 Dec · PAE → FRA · 2 stops
found 5 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 9 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