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SEP to YBY: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Bonnyville (Bonnyville Airport)
1,646 mi
2,649 km · 1,431 nm
3h 42m
estimated nonstop flight time
-1h
time difference · heading north
See live SEP→YBY fares Phone-only fares on this route — call free
Flight time details
1,646 miles nonstop takes roughly 3h 42m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- SEP — Stephenville Clark Regional Airport · Stephenville, United States
- YBY — Bonnyville Airport · Bonnyville, 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 SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 mi away
Near YBY
- YOD · CFB Cold Lake20 mi away
- YVG · Vermilion Airport66 mi away
- YLL · Lloydminster Airport74 mi away
- YLJ · Meadow Lake Airport91 mi away
Frequently asked questions
How far is SEP from YBY?
The flight distance from Stephenville (SEP) to Bonnyville (YBY) is 1,646 miles (2,649 km, 1,431 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to YBY?
A nonstop flight takes about 3h 42m 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 SEP to YBY?
Nonstop service on SEP–YBY 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 42m nonstop estimate.
What is the time difference between Stephenville and Bonnyville?
Bonnyville is 1 hour behind Stephenville.
What is the cheapest way to fly from SEP to YBY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–YBY that never appear on search engines, with no booking fees.
Why are some SEP to YBY fares phone-only?
Consolidator contracts let us sell certain SEP–YBY 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.