The Flight Deal reports some great Delta fares from a variety of cities to London. While it’s not uncommon to see flights to London under $500, it’s very rare to see prices like that during peak summer travel season.
Delta: US-London from $460-560
- Can originate from Dallas, Philadelphia, Phoenix, or Miami (possibly others)
- Requires 7-day minimum stay
- Use Google Flights to find availability
I would not be surprised to see American fire back with equivalent fares out of Delta hubs, so look for American flights out of Detroit, Minneapolis, Atlanta, etc.