Cheap flights from San Francisco to Belfast from $756
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from San Francisco to Belfast
Cheap round-trip flights
See travel insights to Belfast from
How to get the cheapest flight ticket from San Francisco to Belfast Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Belfast Intl Airport?
The month of October is, on average, the cheapest month to fly to Belfast Intl Airport from San Francisco, with most prices found around $588. If you’re not able to fly to Belfast Intl Airport in October, then April is your next best option. Flight prices from San Francisco to Belfast Intl Airport during April average around $622.
What is the cheapest day to depart on your flight to Belfast Intl Airport?
The cheapest day to depart on your flight to Belfast Intl Airport is on a Tuesday when prices can be found for as low as $690. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Belfast Intl Airport for around $1,423.
When to book flights from San Francisco to Belfast Intl Airport
Cheap San Francisco to Belfast Intl Airport (SFO to BFS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Belfast Intl Airport
How far is San Francisco to Belfast Intl by plane?
Belfast Intl is 5016.8 mi away from San Francisco. In terms of flight time, this usually takes a little over 16h 00m.
When did momondo last update prices for flights from San Francisco Airport to Belfast Intl Airport?
Prices for flights from San Francisco Airport to Belfast Intl Airport refresh daily.
How many operators does momondo search for flights from San Francisco Airport to Belfast Intl Airport?
As of June 2025, there are 2 operators available to choose from for flights from San Francisco Airport to Belfast Intl Airport.
How old do you have to be to fly from San Francisco Airport to Belfast Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Belfast Intl Airport.
What documentation or ID do you need to fly to Belfast Intl Airport?
The required travel and health documents for your Belfast Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Francisco to Belfast Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Belfast Intl Airport is British Airways (69% of total bookings). The next most popular airline is American Airlines (31%).
Best airlines flying from San Francisco to Belfast Intl Airport
Compare and see reviews for airlines that fly from San Francisco to Belfast Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $493 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $588 | Free Cancellation | Rating 6.6 7,008 reviews |
Traveling to a place near Belfast?
Book flights to Belfast if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Francisco to Belfast?
It is quick and easy to find San Francisco to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.
Can I find flights from San Francisco to Belfast with flexible booking policies on momondo?
Yes. All flights to Belfast from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from San Francisco to Belfast?
Once you have performed a search for San Francisco to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Francisco to Belfast right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from San Francisco and alert you when they change.