The cheapest times to fly from DEC to OAK are

  • January 1st to March 18th
  • April 16th to May 6th
  • October 8th to November 18th
  • December 3rd to March 18th (except the weeks of December 17th and December 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEC to OAK is late January and early February. Prices can be as high as $2230 for Sunday flights during early to mid August, or as low as $403 for Tuesday flights around late January and early February.


When to Fly to Oakland

Flying from Decatur, IL (DEC) to Oakland, CA (OAK) will usually cost between $428 to $792 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $428. Due to high demand the most expensive time to fly is early to mid August, with an average price of $2230. Planning your trip to low-cost times can easily save you $1802 on economy flights and even more on first-class flights. Generally, any price below $562 can be considered a good price for a round-trip DEC to OAK flight.

See below for a graph of average weekly prices for the DEC to OAK route. All prices are for round-trip tickets in USD.

DEC to OAK Flight Prices

Compared to other flights, the DEC to OAK flight is cheaper than the average and costs less than the average flight leaving from Decatur. The average price per mile (for a direct flight) is $0.19, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $158 (23%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $503. Return trip prices are from the OAK to DEC flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DEC to OAK can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 4 hour 12 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from DEC to OAK while comparing.

Destination alternative #1: San Francisco International Airport (SFO) in San Francisco, CA

  • 11 miles (18 km) away from OAK
  • Usually 13.70% less expensive than OAK
  • 1-layover flights available

See DEC to SFO flights


Flight Hacking DEC to OAK

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from DEC to OAK — but Champion Traveler does!

Hack #1: Chicago, IL (DEC > ORD > OAK)

  • Price for both tickets: $487
  • Average savings: $75 (13.35%)

See DEC to ORD flights

Hack #2: St. Louis, MO (DEC > STL > OAK)

  • Price for both tickets: $496
  • Average savings: $66 (11.74%)

See DEC to STL flights


Flight Questions Answered

Still have questions about flying from DEC to OAK? We’ve got answers.

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Cape Air, Delta, SAS, United, and potentially more during busy seasons.

How far away is it from Metropolitan Oakland International Airport to Decatur Airport?

The distance between the two airports is roughly 1792 miles or 2884 kilometers.

How long does it take to fly from DEC to OAK?

The real-world flight time for a nonstop DEC to OAK flight is about 4 hour 12 minutes.

How many flights go between Decatur, IL and Oakland, CA?

It depends on the day of the week and the date, but a typical day might have around 16 available flights from DEC to OAK.


Airport Location Info


Departing Airport

Origination code DEC
Origination airport name Decatur Airport
City Decatur, IL
Country the United States
Latitude 39.8
Longitude -88.9

Return Airport

Destination code OAK
Destination airport name Metropolitan Oakland International Airport
City Oakland, CA
Country the United States
Latitude 37.7
Longitude -122.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.