I don't know if this will still help, but my sister and brother-in-law were visiting and their flights through Doha were cancelled. Flights out of Bangkok were insane, so we booked a flight from Taipei through Chiang Mai using a regional carrier to Taiwan. Sure they had to pick up their baggage and go through immigration in Taiwan, but their one-way tickets to DC were 16000 baht plus 3k for the regional carrier. This was 9 days ago so it may have changed, but looking for slightly alternative routes and not completely direct might save you a bunch of money.
