Dulles to Seattle (IAD–BFI) — Airlines, Schedules & Connections

IAD Airport Page →
2,300 mi airlines 2/wk
On-time Some delays Frequent delays
Flight Schedule 0 flights Verified 22h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
Dulles to Seattle
Connecting service available through multiple hubs.
2 Flights/wk 2,300 mi 4h 11m nonstop -2h behind 48 1-stop hubs

While no nonstop service exists between IAD and BFI, connecting options are available through 48 hubs.

Also explore IAD Routes BFI Routes IAD Live Flights BFI Live Flights IAD Delays
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for IAD to BFI.
1-STOP
One-Stop Connections
48
Hubs
~6h
Fastest
~34h
Longest
BWI ~6h 6m BZN ~6h 10m DAL ~6h 12m CMH ~6h 26m DCA ~6h 29m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
351
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
IAD → BFI
63%
Moderate delays possible. Allow buffer time.
Departing
63%
Return
BFI → IAD
84%
Generally reliable. Most flights run on time.
Arriving
84%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. IAD delays →
Alternatives

Other ways to reach Seattle from Dulles

Nearby airports with service to King County International Airport - Boeing Field.
Metric IAD→BFI DCA→BFI BWI→BFI
Distance from IAD – 23 mi 45 mi
Nonstop airlines 0 1 1
Weekly flights 2 1 1
Flight time 4h 11m 4h 14m 4h 9m
Departure OTP 63% – –
Washington (DCA) to Seattle flights · Baltimore (BWI) to Seattle flights
Airports within 200 miles of IAD with service to King County International Airport - Boeing Field.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-2h
Seattle is 2 hours behind Dulles.
IAD: EDT · BFI: MDT

When it's 6:00 PM in Dulles, it's 4:00 PM in Seattle.
Distance & Flight Time
2,300 mi / 3,701 km
Nonstop flight time is approximately 4h 11m to 4h 37m.
Getting to IAD

WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).

Facts

IAD–BFI Quick Facts

Key statistics for the Dulles to Seattle route.
Route details
Distance2,300 mi / 3,701 km
Flight time4h 11m to 4h 37m
Time difference-2 hours
Airlines (nonstop)0
Weekly flights2 out / 1 return
1-stop connections48 hubs
Origin: IAD
Full nameWashington Dulles International Airport
IATA / ICAOIAD / KIAD
TimezoneAmerica/New_York
Passengers/yr26.0M
Elevation312 ft / 95 m
Destination: BFI
Full nameKing County International Airport - Boeing Field
IATA / ICAOBFI / KBFI
TimezoneAmerica/Boise
Passengers/yr0.1M
Elevation21 ft / 6 m
FAQ

Frequently Asked Questions

Common questions about IAD to BFI flights.
Nonstop flights from Washington Dulles International Airport to King County International Airport - Boeing Field take approximately 4h 11m to 4h 37m. The route covers 2,300 miles.
There are approximately 2 nonstop flights per week from IAD to BFI. The return direction has about 1 weekly flights.
Yes, 1-stop connections are available through BWI, BZN, DAL, CMH, DCA, IND, SDF, EGE, OAK, PDX, OMA, EWR, ORD, STS, SJC, SCF, SNA, DFW, VNY, OKC, AUS, STL, CLT, LAS, BNA, DEN, IAH, YYZ, SAN, PHX, JAX, BUR, SFO, PSP, RDU, RSW, LAX, ATL, SMF, MSP, TPA, GCM, SLC, KOA, FLL, YVR, YYC and HND. These options provide additional schedule flexibility.
Seattle is 2 hours behind Dulles.
Yes, return flights from BFI to IAD are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include DCA and BWI. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from IAD to BFI

Washington Dulles International Airport (IAD) and King County International Airport - Boeing Field (BFI) are connected through multiple connecting hub airports.

IAD to BFI Flight Duration and Schedule

Nonstop flight time from IAD to BFI ranges from 4 hours 11 minutes to 4 hours 37 minutes. The route covers a distance of 2,300 miles (3,701 km). There are approximately 2 weekly flights outbound and 1 return, totaling 3 flights per week in both directions.

Connecting Options and Alternatives

48 one-stop connections are available, with the fastest taking approximately 6 hours via BWI. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA) and Baltimore (BWI).