Washington (IAD) to Trondheim (TRD) flight deal in economy from $421

Friday, December 18th, 2026

7 round-trip options

Returning
Wed, Dec 23, 20265 Day Trip
$1,255 USD
Returning
Thu, Dec 24, 20266 Day Trip
$1,165 USD
Returning
Sat, Dec 26, 20268 Day Trip
$1,305 USD
Returning
Mon, Dec 28, 202610 Day Trip
$1,255 USD
Returning
Wed, Dec 30, 202612 Day Trip
$1,135 USD
Returning
Thu, Dec 31, 202613 Day Trip
$1,165 USD
Returning
Fri, Jan 1, 202714 Day Trip
$1,630 USD