£427 Cheap Flights from Belfast (BFS) to San Francisco (SFO)

You can find one-way and return flights from BFS to SFO with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when BFS to SFO ticket fares go up or down.

The cheapest months to fly from BFS to SFO are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Enter BFS to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

BA Cityflyer is one of the cheapest airlines offering connecting return flights from Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.), with prices starting from around £1067 for flights that can be booked for departure within the next year, with a layover in Heathrow (LHR). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

The earliest flight from Belfast International (BFS) to San Francisco International (SFO) typically departs around 6:30 AM. This service is operated by British Airways and American Airlines. This is a seasonal service, active only in July. An early departure like this allows you to maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Belfast International Airport (BFS) to San Francisco International Airport (SFO) on a Wednesday, with around 19 flights available. This gives you a good selection of options for your journey. Major airlines on this route include British Airways, KLM, and Aer Lingus. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices regardless of your travel day.

The most popular departure times for flights from Belfast Intl. (BFS) to San Francisco Intl. (SFO) are in the early morning, from 6am to 9am. Many major carriers, including British Airways, Aer Lingus and BA Cityflyer, offer flights during this window. Many travellers prefer these times as it allows for an early start to their journey, often leading to an afternoon arrival at their destination.

Yes, you can fly business class between BFS and SFO. Airlines that offer business class service on this route include:

* British Airways
* KLM
* BA Cityflyer

It's easy to earn miles on a Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to San Francisco from Belfast Intl. (BFS), you can fly directly into San Francisco Intl. (SFO). Some flights may connect through major hubs like Heathrow (LHR), Schiphol (AMS), or Edinburgh (EDI) before reaching San Francisco. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Belfast (BFS-Belfast Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.