United Airlines Baggage Policy: Washington to London
Route: IAD → LON · Nonstop available
Last verified: April 2026 · Source: United Airlines official website
Quick Answer
Detailed Baggage Allowance
| Category | Details |
|---|---|
| Carry-On | 22x14x9 inches (56x35x23 cm) including handles and wheels |
| Personal Item | 1 personal item: 17x10x9 inches (43x25x22 cm). Must fit under the seat. |
| Checked Bag Allowance | Basic Economy: 0 bags (unless trans-Pacific/Atlantic). Economy: 0 bags (domestic). Premium Economy: 2 bags (23 kg). Business/First: 2 bags (32 kg). |
| First Bag Fee | $45 prepaid, $50 at check-in for domestic economy |
| Second Bag Fee | $55 prepaid, $60 at check-in for domestic economy |
| Overweight Fee | $100 for bags 51-70 lbs (23-32 kg), $200 for bags 71-100 lbs (32-45 kg) |
| Oversized Fee | $200 for bags 63-115 linear inches |
| Max Weight | 23 kg |
| Max Dimensions | 158 cm linear (L+W+H) / 62 inches |
Special Items
Sports Equipment
Most sports equipment counts toward checked bag allowance. Golf clubs allowed in hard case. Scuba tanks allowed as checked bag. Oversized/overweight fees may apply.
Musical Instruments
Small instruments allowed as carry-on in hard case. Large instruments require purchased seat. Checked instruments subject to standard fees.
International Baggage Rules
Economy passengers can check 1 bag for free on most international routes. Basic Economy pays $75 for the first bag. Premium Economy gets 2 free bags.
Tips to Avoid Baggage Fees
1. Get a United MileagePlus credit card for a free first checked bag. 2. Prepay for bags at least 24 hours before departure to save $5. 3. Achieve Premier Elite status for free checked bags up to 70 lbs. 4. Pack only a personal item if flying Basic Economy.
Frequently Asked Questions
What is United Airlines's baggage allowance for Washington to London?
Carry-on: 22x14x9 inches (56x35x23 cm) including handles and wheels. Checked bags: Basic Economy: 0 bags (unless trans-Pacific/Atlantic).
How much does United Airlines charge for checked bags on IAD-LON?
First bag: $45 prepaid, $50 at check-in for domestic economy. Second bag: $55 prepaid, $60 at check-in for domestic economy.
Does United Airlines include free checked bags in economy?
No — Basic Economy: 0 bags (unless trans-Pacific/Atlantic).
Other Airlines: Washington to London
United Airlines Baggage on Other Routes
Last verified: April 2026. Baggage policies are subject to change. Always confirm with United Airlines before travel.