Seattle to Twin Falls (SEA–TWF) — Airlines, Schedules & Connections

SEA Airport Page →
513 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 2 1-stop flights Verified 2w ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 2 hubs
SLC Salt Lake City 4h 19m AMASAY → DL Salt Lake City (SLC) to Twin Falls flights
LAS Las Vegas 13h 29m AFAMAS → MX Las Vegas (LAS) to Twin Falls flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Seattle to Twin Falls
Connecting service available through multiple hubs.
2 Airlines 513 mi 1h 49m nonstop +1h ahead

SEA–TWF had nonstop service from Alaska Airlines and Delta Air Lines, last on the schedule in July 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 513 miles in 1h 49m.

Also explore SEA Routes TWF Routes SEA Live Flights TWF Live Flights SEA Delays
All flights from Twin Falls (TWF) Twin Falls to Seattle flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop SEA–TWF service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AS Alaska Airlines 1 – – 52% Oneworld –
DL Delta Air Lines 1 – – 52% SkyTeam –
Alliance coverage
Oneworld: AS (1 flights/wk, 50%)
SkyTeam: DL (1 flights/wk, 50%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for SEA to TWF.
1-STOP
One-Stop Connections
2
Hubs
~4h
Fastest
~13h
Longest
SLC ~4h 19m LAS ~13h 29m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
184
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
SEA → TWF
52%
Frequent delays expected. Consider flexible booking.
Departing
52%
Return
TWF → SEA
75%
Generally reliable. Most flights run on time.
Arriving
75%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. SEA delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Twin Falls is 1 hour ahead of Seattle.
SEA: PDT · TWF: MDT

When it's 6:00 PM in Seattle, it's 7:00 PM in Twin Falls.
Distance & Flight Time
513 mi / 826 km
Nonstop flight time is approximately 1h 49m gate to gate.
Getting to SEA

Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).

Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.

Facts

SEA–TWF Quick Facts

Key statistics for the Seattle to Twin Falls route.
Route details
Distance513 mi / 826 km
Flight time1h 49m
Time difference+1 hour
Airlines (nonstop)2
1-stop connectionsAvailable
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Los_Angeles
Passengers/yr50.8M
Elevation433 ft / 132 m
Destination: TWF
Full nameJoslin Field Magic Valley Regional Airport
IATA / ICAOTWF / KTWF
TimezoneAmerica/Boise
Passengers/yr0.1M
Elevation4,154 ft / 1,266 m
FAQ

Frequently Asked Questions

Common questions about SEA to TWF flights.
Nonstop flights from Seattle–Tacoma International Airport to Joslin Field Magic Valley Regional Airport take about 1h 49m gate to gate. The route covers 513 miles.
2 airlines operated the nonstop from SEA to TWF: Alaska Airlines and Delta Air Lines. The last scheduled nonstop was in July 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in July 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 1h 49m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Salt Lake City and Harry Reid.
Twin Falls is 1 hour ahead of Seattle.
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 SEA to TWF

Seattle–Tacoma International Airport (SEA) and Joslin Field Magic Valley Regional Airport (TWF) had nonstop service from Alaska Airlines and Delta Air Lines, last on the schedule in July 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

SEA to TWF Flight Duration and Schedule

Nonstop flight time from SEA to TWF is about 1 hours 49 minutes gate to gate. The route covers a distance of 513 miles (826 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Salt Lake City and Harry Reid. Two-stop connections are also available via intermediate hubs.