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MMH to YSM: distance & flight time
Mammoth Lakes (Mammoth Yosemite Airport) → Fort Smith (Fort Smith Airport)
1,577 mi
2,538 km · 1,370 nm
3h 33m
estimated nonstop flight time
+1h
time difference · heading north
See live MMH→YSM fares Phone-only fares on this route — call free
Flight time details
1,577 miles nonstop takes roughly 3h 33m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- MMH — Mammoth Yosemite Airport · Mammoth Lakes, United States
- YSM — Fort Smith Airport · Fort Smith, Canada
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 MMH
- BIH · Eastern Sierra Regional Airport31 mi away
- RMY · Mariposa Yosemite Airport66 mi away
- FAT · Fresno Yosemite International Airport76 mi away
- MAE · Madera Municipal Airport83 mi away
Near YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 mi away
Frequently asked questions
How far is MMH from YSM?
The flight distance from Mammoth Lakes (MMH) to Fort Smith (YSM) is 1,577 miles (2,538 km, 1,370 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MMH to YSM?
A nonstop flight takes about 3h 33m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from MMH to YSM?
Nonstop service on MMH–YSM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 3h 33m nonstop estimate.
What is the time difference between Mammoth Lakes and Fort Smith?
Fort Smith is 1 hour ahead of Mammoth Lakes.
What is the cheapest way to fly from MMH to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MMH–YSM that never appear on search engines, with no booking fees.
Why are some MMH to YSM fares phone-only?
Consolidator contracts let us sell certain MMH–YSM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.