How long is the flight from San Francisco to Trondheim?

For as low as $466, Scandinavian Airlines can have you in Trondheim from San Francisco in 20h. There are 4995 mi between San Francisco and Trondheim.

What is the cheapest airline to fly from San Francisco to Trondheim round-trip?

Scandinavian Airlines, at $611, was found to be the cheapest airline from San Francisco to Trondheim.. Scandinavian Airlines is currently priced 46% below the average price you’ll pay for this route.

What is the cheapest day to fly from San Francisco to Trondheim?

Travelers seeking maximum savings on their San Francisco to Trondheim flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Trondheim ranges from 1.8 - 4.3 inches per month. September is typically the wettest month, when rainfall can reach 4.3 in. April is typically the driest time to visit Trondheim when rainfall is around 1.8 in.

If weather is an important factor for your trip to Trondheim, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 55.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

What is the cheapest day to fly round-trip from San Francisco to Trondheim?

Travelers have found that booking a Tuesday departure is the best way to save up to 89% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

September can be a great time to fly to Trondheim from San Francisco with a flight ticket averaging about $1,145. Cheapflights users have found deals in the month of September for as cheap as $619. The most expensive prices can be found in the month of November.

Can I find deals for flights from San Francisco to Trondheim that include hotel bookings?

Yes. In addition to deals on San Francisco to Trondheim flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Francisco to Trondheim?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Trondheim.

Can I find deals for business class flights from San Francisco to Trondheim?

Yes. Cheapflights offers flight deals from San Francisco to Trondheim by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$466+ Flights from San Francisco to Trondheim

Q: How much does it cost to fly round-trip from San Francisco to Trondheim?

Airfare is below average for this route at the moment. San Francisco to Trondheim flights typically cost between $652 and $851 in November. The cheapest round-trip price found within the last 3 days was $466 on Scandinavian Airlines (Nov 9-Nov 13).

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Cheap flight deals from San Francisco to Trondheim

Round-trip from	$466 (oojo)
Popular in	November
Cheapest in	September
Average price	$693

From San Francisco to Trondheim Vaernes

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Highest demand for flights based on searches. 39% potential increase in price ($746 potential increase over avg. RT price).

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Cheapest flight prices on average. 20% potential price decrease ($193 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Cheapest flights from San Francisco to Trondheim
Explore the most affordable flight options available from San Francisco to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Sun 11/94:40 pmSFO - TRD

2 stops20h 00mScandinavian Airlines

Thu 11/137:15 amTRD - SFO

2 stops16h 20mScandinavian Airlines

Deal found 9/11

$466

Best flights from San Francisco to Trondheim
Discover carefully curated flight deals from San Francisco to Trondheim that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Sun 11/94:40 pmSFO - TRD

2 stops20h 00mScandinavian Airlines

Thu 11/137:15 amTRD - SFO

2 stops16h 20mScandinavian Airlines

Deal found 9/11

$466

Thu 1/154:40 pmSFO - TRD

2 stops38h 25mScandinavian Airlines

Mon 1/195:30 amTRD - SFO

1 stop18h 05mScandinavian Airlines

Deal found 9/10

$493

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Trondheim that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoTrondheim

SFO - TRD

SFOTRD

San Francisco

Sun 11/9

4:40 pm-9:40 pm

2 stops20h 00m

Trondheim Vaernes

Thu 11/13

7:15 am-2:35 pm

2 stops16h 20m

$466

San FranciscoTrondheim

SFO - TRD

SFOTRD

San Francisco

Thu 1/15

4:40 pm-4:05 pm

2 stops38h 25m

Trondheim Vaernes

Mon 1/19

5:30 am-2:35 pm

1 stop18h 05m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from San Francisco to Trondheim

Have a flexible travel schedule? Discover the best time to fly to Trondheim from San Francisco with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Trondheim

What is the cheapest time of day to fly from SFO to TRD?

It’s typically best to fly out from San Francisco to Trondheim in the morning. Doing so could potentially save you 28% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from San Francisco to Trondheim?

Reviews of airlines servicing Trondheim

See what other customers who have flown with Scandinavian Airlines from San Francisco to Trondheim have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Scandinavian Airlines

7.4

Good

1,484 reviews

Reviews

1 / 20

6.0

Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.

Scandinavian Airlines

7.4

Good

1,484 reviews

Scandinavian Airlines

7.4

Good

1,484 reviews

Reviews

1 / 20

6.0

Good

Anonymous,May 2025

ATL - CPH

Related info for your journey

How long is the flight from San Francisco to Trondheim?
For as low as $466, Scandinavian Airlines can have you in Trondheim from San Francisco in 20h. There are 4995 mi between San Francisco and Trondheim.
What is the cheapest airline to fly from San Francisco to Trondheim round-trip?
Scandinavian Airlines, at $611, was found to be the cheapest airline from San Francisco to Trondheim.. Scandinavian Airlines is currently priced 46% below the average price you’ll pay for this route.
Can I find deals for flights from San Francisco to Trondheim that include hotel bookings?
Yes. In addition to deals on San Francisco to Trondheim flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco to Trondheim?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Trondheim.
Can I find deals for business class flights from San Francisco to Trondheim?
Yes. Cheapflights offers flight deals from San Francisco to Trondheim by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from San Francisco to Trondheim

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest$611	Average$1,029	FlexibilityNo cancel fee	On-time77%

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$466+ Cheap flights from San Francisco (SFO) to Trondheim (TRD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Trondheim with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Francisco to Trondheim

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from San Francisco to Trondheim

Cheapest flights from San Francisco to TrondheimExplore the most affordable flight options available from San Francisco to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from San Francisco to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Trondheim that are best for you.

Best time to book a flight from San Francisco to Trondheim

Have a flexible travel schedule? Discover the best time to fly to Trondheim from San Francisco with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Trondheim

What is the cheapest time of day to fly from SFO to TRD?

How much does it cost to fly round-trip from San Francisco to Trondheim?

Reviews of airlines servicing Trondheim

See what other customers who have flown with Scandinavian Airlines from San Francisco to Trondheim have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Trondheim. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from San Francisco to Trondheim?

What is the cheapest airline to fly from San Francisco to Trondheim round-trip?

Can I find deals for flights from San Francisco to Trondheim that include hotel bookings?

How can I find direct flights from San Francisco to Trondheim?

Can I find deals for business class flights from San Francisco to Trondheim?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Trondheim

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Top airline flying from San Francisco to Trondheim

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Book with Flexibility

Travel Smart

Cheapest flights from San Francisco to Trondheim
Explore the most affordable flight options available from San Francisco to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.