United BDL-SFO flights in 2027

United plans to start daily, year-round nonstop flights between Bradley International Airport (BDL) and San Francisco International Airport (SFO) on March 28, 2027. Bradley's announcement lists a 6:30 p.m. departure from Connecticut but does not publish the SFO departure, flight numbers or aircraft.

This is a future service. Search the exact date on United and confirm that the result says nonstop before paying for a hotel, rental car or separate connection.

*Original AI-generated OpenSim editorial illustration. The unbranded aircraft and composite landscape do not show a real flight or either airport.*

The practical answer: United says the BDL-SFO nonstop will begin March 28, 2027 and operate every day throughout the year. Bradley lists a 6:30 p.m. departure from BDL. The return time, flight numbers and aircraft were not included in the announcement, so use the date-specific itinerary for those details.

This guide was checked on October 23, 2026.

The announced service is daily and year-round

Bradley International Airport's announcement sets out the confirmed plan. It also says the route is intended to support connections through SFO to the western United States, Asia and Oceania.

The announcement is not a live timetable. United may change times, flight numbers or aircraft before launch. The issued itinerary in My Trips is the useful record once a passenger books.

Check that the fare is for the nonstop

United has a Hartford to San Francisco fare page, but route pages can include connecting options. Check the stops field, operating carrier, local departure time and arrival date for the exact travel day.

Prices shown on a fare page are recent examples, not guarantees. Compare the final total after bags and seat choices. If a return journey matters, inspect both directions because Bradley's announcement gives only the evening BDL departure.

Avoid treating a separate onward ticket at SFO as protected by United. If the first flight is delayed, the next airline may not rebook a passenger on a different reservation. Leave a recovery buffer or keep the journey on one ticket where practical.

Read the baggage line before buying Basic Economy

United's carry-on guide lists a maximum carry-on size of 9 by 14 by 22 inches and a personal-item size of 9 by 10 by 17 inches for fares that include both items.

Domestic Basic Economy is the main exception. United's Basic Economy rules generally include one personal item but not a full-size carry-on for most travelers on a domestic trip. Eligible status, cards and other exceptions can change the allowance. The booking's baggage line should settle the question before payment.

Keep medication, identification, keys, spare batteries and essential electronics in the personal item. The aircraft has not been announced, and an aircraft displayed during booking can still change.

Bradley is not in downtown Hartford

Bradley International Airport is in Windsor Locks, north of Hartford. The airport's directions page estimates a 15-minute drive from Hartford and a 15-minute drive from Springfield, but traffic and the traveler's actual starting point can change that.

Bradley's current airline directory places United in Terminal A, gate section 20 to 30. That is the current arrangement, not a guarantee for a March 2027 flight. Use the boarding pass and airport display on departure day.

Public transport to Bradley requires more planning than a direct downtown rail link. Check the current route, last connection and luggage practicality before relying on it for a 6:30 p.m. flight. A parking or drop-off plan may be simpler for travelers starting outside central Hartford.

SFO connections need a terminal check

SFO currently lists United domestic operations in Terminals 2 and 3. The gate on the United itinerary determines the correct path, and construction can change how passengers move between terminals.

For a connection to Asia or Oceania, keep the entire journey on one reservation when possible. On the return to the United States, passengers arriving internationally normally complete immigration and customs at their first US airport and may need to collect and recheck baggage. Follow the instructions for the actual ticket and terminal.

For San Francisco itself, BART serves SFO from the International Terminal. AirTrain connects the airport's terminals and transport facilities. Check BART's trip planner and operating hours against the final arrival time rather than assuming trains run all night.

Allow airport time beyond the cutoff

United's airport process guide lists general domestic check-in cutoffs of 30 minutes without a checked bag and 45 minutes with one. Those are processing deadlines, not recommended arrival times. United advises arriving two hours before a domestic departure and allowing more time when lines are busy.

Travelers aged 18 and over also need acceptable checkpoint identification. Check the TSA identification list before departure instead of relying on an old airport post.

Mobile data in Connecticut and California

The live United States OpenSim eSIM can cover ground use at both ends of this domestic route. The public catalog showed eight United States packages on October 23, 2026, with fixed and daily data options. Allowances, validity, fair-use terms and top-up eligibility vary, so the selected plan card is the source of truth.

Mobile data can help with United alerts, AirTrain or BART directions, a ride pickup and hotel check-in. Install the eSIM on reliable Wi-Fi and save the itinerary and accommodation address offline. An eSIM does not provide inflight service, protect a separate ticket or rebook a disrupted flight.

Ten questions about United's BDL-SFO flights

When do United's Hartford-San Francisco flights start?

United and Bradley International Airport say the first flight is planned for March 28, 2027. Check the reservation again before making a fixed same-day booking because the service has not started yet.

Will the BDL-SFO nonstop operate every day?

Yes, under the announced plan. Bradley describes the service as daily and year-round, unlike United's separately announced four-weekly seasonal San Francisco-Charleston route.

What time will the Hartford flight leave?

Bradley lists a 6:30 p.m. departure from BDL. The announcement does not give the SFO departure or arrival times in either direction, so use United's current itinerary for the selected date.

Are nonstop tickets already bookable?

United has a route-specific fare page, but it can also display connecting journeys. A useful booking result must say nonstop and show the intended March 28, 2027 or later travel date.

Which flight number and aircraft will United use?

Neither appears in Bradley's announcement. Treat numbers or aircraft found in an unofficial schedule as provisional until the United itinerary shows them for the travel date.

Does Basic Economy include a carry-on bag?

Most domestic United Basic Economy travelers receive one personal item but not a full-size carry-on. Qualifying status or card benefits can create exceptions, so check the allowance attached to the passenger and fare.

Which terminal does United use at Bradley?

Bradley's current directory places United in Terminal A, gate section 20 to 30. Confirm the terminal and gate on the day because the route starts in 2027.

Is Bradley easier than flying through New York or Boston?

The nonstop removes an airline connection and avoids a drive to another airport for many Connecticut and western Massachusetts travelers. Compare the full journey from home, including parking or ground transport, fare, departure time and backup options.

Can the Hartford flight connect to an international departure at SFO?

Bradley says the route is designed to improve access to Asia and Oceania through SFO. Whether a specific connection works depends on the same-ticket itinerary, terminals and connection time shown by United.

What happens if the daily flight is cancelled?

Review United's options in My Trips before cancelling voluntarily. Ask about a protected connection through another United hub when the nonstop is unavailable. Separate hotels, cars and tickets need their own flexible terms.

Recheck the return timetable before travel

Recheck the United itinerary, baggage allowance, BDL terminal, SFO connection and ground transport after booking and again before departure. This guide should be updated when United publishes the return schedule, flight numbers or aircraft, and when the first service operates.