Seattle to San Antonio (SEA–SAT) — Airlines, Schedules & Connections

SEA Airport Page →
1,774 mi airlines 8/wk
On-time Some delays Frequent delays
Flight Schedule 4 flights Verified 2h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✓
→
AS9421
AS Alaska
B39M
10:07 AM
MDT
3:29 PM
MDT
3h 22m
—
M T W T F S S
Prices
✓
→
AS494
AS Alaska
739
11:42 AM
MDT
5:20 PM
MDT
5h 38m
—
M T W T F S S
Prices
✓
←
AS9410
AS Alaska
6:01 PM
MDT
8:25 PM
MDT
2h 24m
—
M T W T F S S
Prices
✓
←
AS494
AS Alaska
739
6:42 PM
MDT TA
9:19 PM
MDT
2h 37m
—
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
Seattle to San Antonio
1 carrier, 8 flights/week nonstop.
1 Airlines 8 Flights/wk 1,774 mi 3h 22m nonstop 53 1-stop hubs

SEA–SAT is served by 1 airline with nonstop service. Alaska Airlines leads the route. The flight covers 1,774 miles in approximately 3h 22m. Beyond nonstop, 53 hubs offer 1-stop connections.

Also explore SEA Routes SAT Routes SEA Live Flights SAT Live Flights SEA Delays SAT Delays
Carriers on this route

Airline Landscape

All carriers operating nonstop SEA–SAT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AS Alaska Airlines 8 739, B39M 3h22-5h38 55% Oneworld –
Aircraft on this route
739 Boeing 737-900 – AS
B39M – AS
Alliance coverage
Oneworld: AS (8 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, SEA to SAT direction.
Mon
1
flight
Tue
2
flights
Wed
1
flight
Thu
1
flight
Fri
1
flight
Sat
1
flight
Sun
1
flight
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
2
Nonstop flights
8
Outbound / wk
8
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for SEA to SAT.
1-STOP
One-Stop Connections
53
Hubs
~5h
Fastest
~28h
Longest
FTW ~5h 15m AFW ~5h 34m OKC ~6h 14m JAC ~6h 40m SJC ~6h 55m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,232
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 → SAT
55%
Frequent delays expected. Consider flexible booking.
Departing
55%
Arriving
76%
Return
SAT → SEA
68%
Moderate delays possible. Allow buffer time.
Departing
68%
Arriving
90%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. SEA delays → SAT delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
0h
San Antonio is 0 hours the same as Seattle.
SEA: MDT · SAT: MDT

When it's 6:00 PM in Seattle, it's 6:00 PM in San Antonio.
Distance & Flight Time
1,774 mi / 2,854 km
Nonstop flight time is approximately 3h 22m to 5h 38m.
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–SAT Quick Facts

Key statistics for the Seattle to San Antonio route.
Route details
Distance1,774 mi / 2,854 km
Flight time3h 22m to 5h 38m
Time difference0 hours
Airlines (nonstop)1
Weekly flights8 out / 8 return
1-stop connections53 hubs
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Boise
Passengers/yr52.6M
Elevation433 ft / 132 m
Destination: SAT
Full nameSan Antonio International Airport
IATA / ICAOSAT / KSAT
TimezoneAmerica/Denver
Passengers/yr10.9M
Elevation809 ft / 247 m
FAQ

Frequently Asked Questions

Common questions about SEA to SAT flights.
Nonstop flights from Seattle–Tacoma International Airport to San Antonio International Airport take approximately 3h 22m to 5h 38m. The route covers 1,774 miles.
1 airline operates nonstop service: Alaska Airlines.
There are approximately 8 nonstop flights per week from SEA to SAT. The return direction has about 8 weekly flights.
Yes, 1-stop connections are available through FTW, AFW, OKC, JAC, SJC, SNA, APA, TUS, MEM, TUL, OMA, STS, MRY, MKC, YYZ, CLE, CHS, PHL, DCA, DFW, MDW, SLC, ELP, MSY, GDL, LAS, SFO, FLL, IAH, LAX, SAN, DEN, PHX, CLT, ATL, IAD, MIA, JFK, MSP, BWI, ORD, MCI, DTW, DAL, RDU, BOS, BNA, TPA, MCO, EWR, MEX, STL and CUN. These options provide additional schedule flexibility.
Yes, return flights from SAT to SEA are available. Use the direction toggle at the top to view the return schedule.
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 SAT

Seattle–Tacoma International Airport (SEA) and San Antonio International Airport (SAT) are connected by nonstop service from Alaska Airlines. With 8 weekly departures, this is a regularly served route.

SEA to SAT Flight Duration and Schedule

Nonstop flight time from SEA to SAT ranges from 3 hours 22 minutes to 5 hours 38 minutes. The route covers a distance of 1,774 miles (2,854 km). There are approximately 8 weekly flights outbound and 8 return, totaling 16 flights per week in both directions.

Connecting Options and Alternatives

53 one-stop connections are available, with the fastest taking approximately 5 hours via FTW. Two-stop connections are also available via intermediate hubs.