Frontier AirlinesDepart21:20
Sat, Nov 21SFO → UBN
18h 47m · 2 stops
$567one way, per person
View deal
- Cheapest fare
- $567
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 17h 54m
Frontier Airlines · Sat, Nov 21
from $567
Usually 1+ stop
9,310 km
Get a price alert
We'll email you when San Francisco → Ulaanbaatar drops to your price. It's free, and you can stop any time.
Today's cheapest fare is $567. We'll send one email to confirm. See our privacy policy.
Cheapest month to fly from San Francisco to Ulaanbaatar
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Frontier Airlines
Alaska AirlinesDepart08:33
Wed, Nov 11SFO → UBN
17h 54m · 2 stops
$655one way, per person
View deal
Frontier AirlinesDepart09:09
Fri, Nov 6SFO → UBN
18h 52m · 2 stops
$783one way, per person
View deal
Flair AirlinesDepart09:15
Fri, Nov 20SFO → UBN
23h 00m · 3 stops
$891one way, per person
View deal
Plan the rest of your trip to Ulaanbaatar
Where to stay, what to do and getting around, from our travel partners.
Getting around
About flights from San Francisco to Ulaanbaatar
San Francisco (SFO) and Ulaanbaatar (UBN) are about 9,310 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 17h 54m. Over the next few months, one-way fares start from $567, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from San Francisco to Ulaanbaatar?
The cheapest one-way fare we've seen recently is $567 with Frontier Airlines, departing Saturday, November 21, 2026.
What is the cheapest month to fly from San Francisco to Ulaanbaatar?
November 2026 currently has the lowest fares, from $567 one way.
Are there direct flights from San Francisco to Ulaanbaatar?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from San Francisco to Ulaanbaatar?
The quickest journey we've seen takes about 17h 54m. San Francisco and Ulaanbaatar are around 9,310 km apart.
Which airlines fly from San Francisco to Ulaanbaatar?
Recent fares on this route were with Frontier Airlines, Alaska Airlines and Flair Airlines.
More cheap flights from San Francisco
- San Francisco to Los Angelesfrom $68
- San Francisco to Las Vegasfrom $35
- San Francisco to New Yorkfrom $144
- San Francisco to Dallasfrom $180
- San Francisco to Manilafrom $493
- San Francisco to Ontariofrom $75
- San Francisco to San Diegofrom $18
- San Francisco to New Delhifrom $651
- San Francisco to Phoenixfrom $46
- San Francisco to Taipeifrom $247
- San Francisco to Chicagofrom $218
- San Francisco to Moscowfrom $491