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OSN to CTU: distance & flight time
Osan (Osan Air Base) → Chengdu (Chengdu Shuangliu International Airport)
1,395 mi
2,245 km · 1,212 nm
3h 30m
estimated nonstop flight time
-1h
time difference · heading west
See live OSN→CTU fares Phone-only fares on this route — call free
Flight time details
1,395 miles nonstop takes roughly 3h 30m gate to gate, flying west. 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
- OSN — Osan Air Base · Osan, South Korea
- CTU — Chengdu Shuangliu International Airport · Chengdu, China
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 OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Near CTU
- MIG · Mianyang Airport75 mi away
- YBP · Yibin Caiba Airport128 mi away
- NAO · Nanchong Airport132 mi away
- KGT · Kangding Airport135 mi away
Frequently asked questions
How far is OSN from CTU?
The flight distance from Osan (OSN) to Chengdu (CTU) is 1,395 miles (2,245 km, 1,212 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to CTU?
A nonstop flight takes about 3h 30m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Osan and Chengdu?
Chengdu is 1 hour behind Osan.
What is the cheapest way to fly from OSN to CTU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–CTU that never appear on search engines, with no booking fees.