ORD → SFO

Find and Compare the Cheapest Ways to Fly from Chicago to San Francisco

Compare one-way, round-trip and flight + hotel packages from Chicago to San Francisco, a nonstop flight of about 4h 10m, with fares from around 270.

Chicago to San Francisco flight facts

Chicago to San Francisco is a domestic route covering about 1,841 miles, arriving at San Francisco International Airport (SFO) in United States. Peak travel season in San Francisco runs September–October (warmest, clearest days), while November–March is usually the quietest and best-value time to visit. The cheapest fares we've tracked on this route include at least one stop.

Key facts for flights from Chicago to San Francisco
Departing fromO'Hare International Airport (ORD)
Arriving atSan Francisco International Airport (SFO)
Distance1,841 miles (2,965 km)
Nonstop flight timeAbout 4h 10m
Nonstop airlines seenNone in recent fares, expect 1 stop
Round-trip fares from$270 (estimate)
Cheapest monthsJanuary, February, April
Peak season in San FranciscoSeptember–October
Cheapest hotel months in San FranciscoNovember–March
Best time to book1 to 3 months ahead
Route info updatedOctober 16, 2026

When to visit San Francisco

  • Peak season

    September–October

    Warmest, clearest days

  • Shoulder season

    April–August

    Mild with morning fog

  • Off-peak season

    November–March

    Cool and rainy

Estimated round-trip fares by month, Chicago to San Francisco

Estimated lowest round-trip fare per month
MonthFares from
January$270
February$270
March$285
April$270
May$295
June$365
July$340
August$315
September$275
October$275
November$335
December$325

Flying from Chicago to San Francisco

Airlines Flying this Route

The cheapest fares we've tracked on this route include at least one stop. Ducoffs.com compares full-service and low-cost airlines flying between Chicago and San Francisco in a single search, including nonstop and one-stop options, so you can weigh price against total travel time.

Best Time to Book Flights from Chicago to San Francisco

Fares on this route tend to be lowest in January, February, and April. For the best selection, book about 1 to 3 months before departure and stay flexible by a day or two.

Average Travel Duration

Chicago and San Francisco are about 1,841 miles apart. A nonstop flight takes roughly 4h 10m; connecting itineraries usually add 2 to 5 hours.

Chicago to San Francisco flight questions

How can I find the absolute cheapest flight from Chicago to San Francisco?

The best way to secure budget rates is by comparing multiple airlines simultaneously and checking flexible dates. Ducoffs.com scans available partner networks to bring you real-time pricing options.

What is the cheapest month to fly from Chicago to San Francisco?

Based on typical seasonal demand, January, February, and April tend to offer the lowest fares on this route, with estimated round-trip prices starting around $270. Live prices change daily, so run a search for your exact dates.

How long is the flight from Chicago to San Francisco?

Chicago and San Francisco are about 1,841 miles apart. A nonstop flight takes roughly 4h 10m, while connecting itineraries usually add 2 to 5 hours depending on the layover.

Which airlines fly nonstop from Chicago to San Francisco?

The cheapest fares we've tracked recently on this route include at least one stop. Your live search shows any nonstop options available for your dates.

When are hotels cheapest in San Francisco?

Hotel rates in San Francisco are usually lowest in November–March, when demand is quieter, and highest during peak season (September–October). Booking your flight and hotel together can save up to 30%.

Which airport do I fly into for San Francisco?

This route arrives at San Francisco International Airport (SFO). Your search results also show nearby airports when they offer a cheaper or faster option.

How far in advance should I book a flight to San Francisco?

For this route, booking about 1 to 3 months before departure usually gives the best balance of price and seat selection. Mid-week departures are often cheaper than weekend flights.

Is it cheaper to bundle flights and hotels together?

Yes. Bundling your travel components can save you up to 30% compared to booking flights and hotels separately, as airlines and properties offer exclusive package discounts.