Flight
Portland to San Francisco
Updated: 30 May 2026
Traveling from Portland, Maine to San Francisco covers roughly 3,100 miles across the continent. The most practical method is a connecting flight from Portland International Jetport (PWM) to San Francisco International Airport (SFO). You will typically connect through hubs like Chicago O'Hare or Newark. Expect a total travel time of approximately 9 to 12 hours including layovers. This route crosses four time zones, so prepare for significant jet lag upon arrival.
Total Distance: Driving distance 5,000 km, straight-line air distance 4,300 km.
Fastest Way
Connecting flight with a short layover, total time approximately 9 hours.
Cheapest Way
Connecting flight via United or American Airlines, usually priced around $350.
Compare Portland to San Francisco Routes
Flight
Connecting
Duration
9 hours 30 mins
Avg Price
$350 - $650
Operator
United Airlines
Route
PWM to SFO via EWR or ORD.
Book your flight at least 21 days in advance to secure lower fares.
Travel Tips
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Time ZonesYou will lose three hours moving west; hydrate well to manage the shift.
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LuggageCheck your bag at PWM to avoid carrying it through busy connecting hubs.
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Airport TransitUse the BART train from SFO to reach downtown San Francisco efficiently.
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ClothingSan Francisco is famously foggy; bring layers even in the summer months.
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BookingUse flight aggregators to compare prices across multiple carriers for this long-haul route.
Safety Tips
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Vehicle SafetyNever leave valuables in your rental car in San Francisco, as break-ins are common.
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Public TransitStay alert on late-night BART trains and keep your belongings close.
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HealthCarry a refillable water bottle to stay hydrated during the long flight.
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NavigationDownload offline maps of the city before you arrive to ensure you can navigate without data.
People Also Ask
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Are there direct flights?No, there are no direct flights between Portland, Maine and San Francisco.
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What is the best airport?San Francisco International Airport (SFO) is the most convenient for downtown access.
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How long is the flight?Total travel time including one layover is usually between 9 and 12 hours.
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Is it cheaper to fly on weekends?Mid-week flights are generally cheaper than weekend departures for this route.
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Do I need a car?San Francisco has excellent public transit, so a car is often unnecessary.
Quick Info
- From Portland, Maine, United States
- To San Francisco, California, United States
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Modes
Best Time to Travel
September and October offer the clearest skies in San Francisco and mild weather in Maine.
Things to Do in San Francisco
1
Golden Gate Bridge
Walk across this iconic suspension bridge for panoramic views of the bay. It is free to pedestrians and cyclists.
2
Alcatraz Island
Take the ferry from Pier 33 to tour the historic federal penitentiary. Book tickets weeks ahead as they sell out fast.
3
Fisherman's Wharf
Visit Pier 39 to see the resident sea lions and enjoy fresh sourdough bread bowls. It is a major tourist hub.
4
Chinatown
Explore the oldest Chinatown in North America. Wander through Grant Avenue for authentic dim sum and tea shops.
Tags
Portland to San Francisco flights
Maine to California travel
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