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BFI to UGN: distance & flight time
Seattle (Boeing Field King County International Airport) → Chicago (Waukegan National Airport)
1,705 mi
2,744 km · 1,481 nm
3h 49m
estimated nonstop flight time
+2h
time difference · heading east
See live BFI→UGN fares Phone-only fares on this route — call free
Flight time details
1,705 miles nonstop takes roughly 3h 49m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- UGN — Waukegan National Airport · Chicago, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Near UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 mi away
Frequently asked questions
How far is BFI from UGN?
The flight distance from Seattle (BFI) to Chicago (UGN) is 1,705 miles (2,744 km, 1,481 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to UGN?
A nonstop flight takes about 3h 49m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Chicago?
Chicago is 2 hours ahead of Seattle.
What is the cheapest way to fly from BFI to UGN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–UGN that never appear on search engines, with no booking fees.